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1. B. Nikoobakht and H. Köppel
   Phys. Chem. Chem. Phys. 25 (2023), 19470
   Photodissociation dynamics and UV absorption spectrum of acetone oxide (CH₃)₂COO

2. B. Nikoobakht and H. Köppel
   Chem. Phys. Lett. 833 (2023), 140943
   Conformational dependence of the UV absorption spectrum of CH3CH2CHOO following excitation to the B¹A' state

3. M. F. S. J. Menger and H. Köppel
   J. Phys. Chem. A 127 (2023), 8501
   On the Fluorescence Properties and Nonradiative Transitions in Medium−Sized All−Trans Polyenes

4. V. D. Hannibal, M. F. S. J. Menger and H. Köppel
   J. Phys. C (2023), in press
   Multi−state vibronic dynamics of the benzene cation: Combined multi−mode Jahn−Teller and Pseudo Jahn−Teller Effects

5. A. B. Trofimov, A. D. Skitnevskaya, E. K. Grigoricheva, E. V. Gromov and H. Köppel
   J. Chem. Phys. 157 (2022), 174309
   Vibronic coupling in the ground and excited states of the imidazole radical cation

6. B. Nikoobakht, R. Hakim, M. F. S. J. Menger and H. Köppel
   Mol. Phys. 120 (2022), e2132186
   On the UV spectroscopy and photodynamics of octatetraene

7. B. Nikoobakht and H. Köppel
   Phys. Chem. Chem. Phys. 24 (2022), 12433
   Correlated quantum treatment of the photodissociation dynamics of formaldehyde oxide CH₂OO

8. B. Nikoobakht and H. Köppel
   Mol. Phys. 119 (2021), e1958019
   UV absorption spectrum and photodissociation dynamics of CH2OO following excitation to the B1A' state

9. A. B. Trofimov, A. D. Skitnevskaya, E. K. Grigoricheva, E. V. Gromov and H. Köppel
   J. Chem. Phys. 153 (2020), 164307
   Vibronic coupling in the ground and excited states of the pyridine radical cation

10. S. Goswami, Aiswarya M. P. and H. Köppel
    Mol. Phys. 118 (2020), e1762011
    A quantum dynamical investigation of the excitation transfer in two doubly hydrogen−bonded molecular dimers

11. S. Scheit, S. Goswami, H.−D. Meyer and H. Köppel
    Comp. Theor. Chem. 1150 (2019), 71
    Fully quantal treatment of nonadiabatic molecular photodynamics: General considerations and application to the benzene cation

12. B. Nikoobakht, A. Dreuw and H. Köppel
    J. Chem. Phys. 151 (2019), 104105
    Excited state dynamics of the s−trans−1,3−butadiene cation: An ab initio quantum dynamical analysis

13. S. Goswami, S. Kopec and H. Köppel
    J. Phys. Chem. A 123 (2019), 5491
    Vibronic Coupling and Excitation Transfer in Hydrogen−Bonded Molecular Dimers: A Quantum Dynamical Analysis

14. A. B. Trofimov, I. Powis, R. C. Menzies, D. M. P. Holland, E. Antonsson, M. Patanen, C. Nicolas, C. Miron, A. D. Skitnevskaya, E. V. Gromov and H. Köppel
    J. Chem. Phys. 149 (2018), 074306
    An experimental and theoretical study of the photoelectron spectra of cis−dichloroethene: Valence shell vertical ionization and vibronic coupling in the low−lying cationic states

15. B. Nikoobakht, A. Dreuw, H and Köppel
    Chem. Phys. 515 (2018), 654
    An ab initio quantum dynamical analysis of the vibronic structure of the X²B_g photoelectron spectral band of s−trans−1, 3−butadiene

16. V. Hizhnyakov, K. Pae, V. Boltrushko and H. Köppel
    J. Phys.: Conf. Ser. 1148 (2018), 012002
    Vibronic states in conical intersections: manifestations of centrifugal energy and non−adiabaticity in optical spectra of Jahn−Teller systems

17. A. Chattopadhyay, P. Saini. R. Hakim, A. Komainda and H. Köppel
    Chem. Phys. 509 (2018), 98
    A computational investigation on the photo−isomerization of 2,4,6−octatriene and its UV–visible spectrum

18. R. Sarkar, S. R. Reddy, S. Mahapatra and H. Köppel
    Chem. Phys. 482 (2017), 39
    On the Jahn–Teller effect in the X²E electronic ground state of CH₃F⁺

19. I. Lyskov, H. Köppel and and C. M. Marian
    Phys. Chem. Chem. Phys. 19 (2017), 3937
    Nonadiabatic photodynamics and UV absorption spectrum of all−trans−octatetraene

20. A. Komainda, D. Lefrancois, A. Dreuw and and H. Köppel
    Chem. Phys. 482 (2017), 27
    Theoretical study of the initial non−radiative 1 Bu−2 Ag transition in the fluorescence quenching of s−trans−butadiene: Electronic structure methods and quantum dynamics

21. M. C. E. Galbraith, S. Scheit, N. V. Golubev, G. Reitsma, N. Zhavoronkov, V. Despré, F. Lépine, A. I. Kuleff, M. J. J. Vrakking, O. Kornilov, H. Köppel and J. Mikosch
    Nature Communications 8 (2017), 1018
    Few−femtosecond passage of conical intersections in the benzene cation

22. F. Balmer, S. Kopec, H. Köppel and and S. Leutwyler
    J. Phys. Chem. A 121 (2017), 73
    Excitonic Splitting and Vibronic Coupling Analysis of the m−Cyanophenol Dimer

23. B. Nikoobakht and H. Köppel
    Chem. Phys. Lett. 651 (2016), 221
    Quantum dynamics study of singlet−triplet transitions in s−trans−1,3−butadiene

24. S. Kopec and H. Köppel
    J. Chem. Phys. 144 (2016), 024314
    Theoretical analysis of the S₂ <− S₀ vibronic spectrum of the 2−pyridone dimer

25. A. Komainda, I. Lyskov, C. M. Marian and and H. Köppel
    J. Phys. Chem. A 120 (2016), 6541
    Ab Initio Benchmark Study of Nonadiabatic S₁−S₂ Photodynamics of cis− and trans−Hexatriene

26. P. Ottiger, H. Köppel and S. Leutwyler
    Chem. Sci. 6 (2015), 6059
    Excitonic splittings in molecular dimers: why static ab initio calculations cannot match them

27. C. Lévêque, R. Taïeb and H. Köppel
    Chem. Phys. 460 (2015), 135
    Theoretical assignment of the Clements bands of SO₂

28. S. Kopec, P. Ottiger, S. Leutwyler and H. Köppel
    J. Chem. Phys 142 (2015), 084308
    Analysis of the S₂ <− S₀ vibronic spectrum of the ortho−cyanophenol dimer using a multimode vibronic coupling approach

29. A. Komainda, A. Zech and H. Köppel
    J. Mol. Spectrosc. 311 (2015), 25
    Ab initio quantum study of UV absorption spectra of cis− and trans−hexatriene

30. M. Assmann, H. Köppel and S. Matsika
    Phys. Chem. A, 119 (2015), 866
    Photoelectron spectrum and dynamics of the uracil cation

31. H. Köppel
    in: Molecular Quantum Dynamics, ed. F. Gatti, Springer, Heidelberg (2014)
    Vibronic coupling effects in spectroscopy and non−adiabatic transitions in molecular photodynamics

32. G. Klatt and H. Köppel
    in: Molecular catalysts: Structural and functional design, ed. L. Gade and P. Hofmann, Wiley−VCH, Weinheim (2014)
    Quantum dynamics of molecular elementary processes in catalytic transformations

33. C. Lévêque, D. Pelaez, H. Köppel and R. Taieb
    Nature Communications 5 (2014), 4126
    Direct observation of spin−forbidden transitions through the use of suitably polarized light

34. C. Lévêque, H. Köppel and R. Taieb
    J. Chem. Phys. 140 (2014), 204303
    Excited state dynamics in SO₂. III. An ab initio quantum study of single− and multi−photon ionization

35. C. Lévêque, R. Taieb and H. Köppel
    J. Chem. Phys. Commun. 140 (2014), 091101
    Theoretical prediction of the importance of the ³B₂ state in the dynamics of sulfur dioxide

36. I. Baldea and H. Köppel
    J. Nanomater. Mol. Nanotechnol. 3 (2014), 1
    From Quantum−Dot Nanorings to Polyacetylene via Small Annulenes. A Full Configuration Interaction Description Based on an Extended Hubbard−Su−Schrieffer−Heeger Model

37. C. Lévêque, A. Komainda, R. Taieb and H. Köppel
    J. Chem. Phys. 138 (2013), 044320
    Ab initio quantum study of the photodynamics and absorption spectrum for the coupled 1¹A₂ and 1¹B₁ states of SO₂

38. A. Komainda, B. Ostojic and H. Köppel
    J. Phys. Chem. A 117 (2013), 8782
    Ab initio quantum study of nonadiabatic S1−S2 photodynamics of s−trans butadiene

39. G. Klatt, R. Xu, M. Pernpointner, L. Molinari, T.−Q. Hung, F. Rominger, S. Hashmi and H. Köppel
    Chem. Eur. J. 19 (2013), 3954
    Are beta−H eliminations or alkene insertions feasible elementary steps in catalytic cycles involving gold(I) alkyl species or gold(I) hydrides?

40. E. V. Gromov, V. S. Reddy, F. Gatti and H. Köppel
    J. Chem. Phys. 139 (2013), 234306
    Reaction surface approach to multimode vibronic coupling problems: General framework and application to furan

41. I Baldea, H Köppel and W. Wenzel
    Phys. Chem. Chem. Phys. 15 (2013), 1918
    (4, 4')−Bipyridine in vacuo and in solvents: A quantum chemical study of a prototypical floppy molecule from a molecular transport perspective

42. R. Xu, G. Klatt, M. Enders and H. Köppel
    J. Phys. Chem. A 116 (2012), 1077
    Theoretical evaluation of ethylene insertion into chromium alkyl bonds of Cp−donor−based olefin polymerization catalysts

43. A. Vibok, A. Csehi, E. Gindensperger, H. Köppel and G. J. Halász
    J. Phys. Chem. A 116 (2012), 2629
    Quantum dynamics through conical intersections: Combining effective modes and quadratic couplings

44. Ph. Ottiger, S. Leutwyler and H. Köppel
    J. Chem. Phys. 136 (2012), 174308
    Vibrational quenching of excitonic splittings in H−bonded molecular dimers: The electronic Davydov splittings cannot match experiment

45. B. Nikoobakht, H. Köppel, E. Gindensperger and L. S. Cederbaum
    J. Chem. Phys. 137 (2012), 114110
    Efficient computation of adiabatic electronic populations in multi−mode vibronic systems: Theory, implementation, and application

46. S. Kopec, Ph. Ottiger, S. Leutwyler and H. Köppel
    J. Chem. Phys. 137 (2012), 184312
    Vibrational quenching of excitonic splittings in H−bonded molecular dimers: Adiabatic description and effective mode approximation

47. E. V. Gromov, I. Burghardt, H. Köppel and L. S. Cederbaum
    J. Photochem. Photobiol. A 234 (2012), 123
    Native hydrogen bonding network of the photoactive yellow protein (PYP) chromophore: Impact on the electronic structure and photoinduced isomerization

48. S. Gomez−Carrasco and H. Köppel
    J. Chem. Sci. 124 (2012), 247
    Quantum dynamical study of low−energy photoelectron bands of 2−phenylethyl−N,N−dimethylamine

49. S. Faraji and H. Köppel
    J. Chem. Phys. 137 (2012), 22A531
    Multi−state interactions in the 1,2,3−trifluorobenzene radical cation

50. I. Baldea and H. Köppel
    Phys. Stat. Solidi (b) 249 (2012), 1791
    Transition voltage spectroscopy in vacuum break junction: the standard tunneling barrier model and beyond

51. I. Baldea and H. Köppel
    Phys. Lett. A 376 (2012), 1645
    A physical limitation of the Wigner ``distribution'' function in molecular transport

52. I. Baldea and H. Köppel
    Phys. Lett. A 376 (2012), 1472
    Evidence on single−molecule transport in electrostatically−gated molecular transistors

53. B. Nikoobakht, H. Köppel, E. Gindensperger and L. S. Cederbaum
    J. Chem. Phys. 135 (2011), 174110
    Efficient computation of adiabatic populations in multi−mode Jahn−Teller systems through the use of effective vibrational modes

54. H. Köppel, L.S. Cederbaum and S. Mahapatra
    in: Handbook of high resolution spectroscopy, ed. M. Quack and F. Merkt, Wiley, Chichester (2011)
    Theory of the Jahn−Teller effect

55. M. Kayanuma, C. Daniel, H. Köppel and E. Gindensperger
    Coord. Chem. Reviews 255 (2011), 2693
    Photophysics of isomerizable Re(I) complexes: A theoretical analysis

56. G. Halász, A. Papp, E. Gindensperger, H. Köppel and A. Vibók
    Prog. Theor. Chem. Phys. 16 (2011), 287
    Short−time dynamics through conical intersections in macrosystems: Quadratic coupling extension

57. E. V. Gromov, I Burghardt, H. Köppel and L. S. Cederbaum
    J. Phys. Chem. A 115 (2011), 9237
    Photoinduced isomerization of the photoactive yellow protein (PYP) chromophore: Interplay of two torsions, a HOOP mode and hydrogen bonding

58. E. V. Gromov, C. Lévêque, F. Gatti, I. Burghardt and H. Köppel
    J. Chem. Phys. 135 (2011), 164305
    Ab initio quantum dynamical study of photoinduced ring−opening in furan

59. S. Gomez−Carrasco and H. Köppel
    Faraday Discuss. 150 (2011), 156−158
    Theoretical treatment of five strongly coupled electronic states of formaldehyde

60. S. Faraji, S. Gómez−Carrasco and H. Köppel
    in: Conical Intersections: Theory, Computation and Experiment, ed. W. Domcke and D.R. Yarkony and H. Köppel, World Scientific, Singapore (2011)
    Multistate vibronic dynamics and multiple conical intersections

61. S. Faraji, M. Vazdar, V. S. Reddy, M. Eckert−Maksic, H. Lischka and H. Köppel
    J. Chem. Phys. 135 (2011), 154310
    Ab initio quantum dynamical study of the multi−state nonadiabatic photodissociation of pyrrole

62. W. Domcke, D.R. Yarkony and H. Köppel, eds.
    Conical Intersections: Theory, Computation and Experiment,
    World Scientific, Singapore (2011)
    

63. I. Burghardt, K. Hughes, R. Martinazzo, H. Tamura, E. Gindensperger, H. Köppel and L. S. Cederbaum
    in: Conical Intersections: Theory, Computation and Experiment, ed. W. Domcke and D.R. Yarkony and H. Köppel, World Scientific, Singapore (2011)
    Conical Intersections coupled to an Environment

64. I. Baldea and H. Köppel
    Phys. Rev. B 84 (2011), 037305
    Reply to "Comment on 'Critical analysis of a variational method used to describe molecular electron transport'"

65. R. Xu, G. Klatt, H. Wadepohl and H. Köppel
    Inorg. Chem. 49 (2010), 3289
    Hydrogen scrambling in [(C₅R₅)(L)M(H)(C₂H₄)]+ (M=Co, Rh). Relation of experimental kinetic data to the barriers of the elementary reaction steps

66. S. Mark, A. Kurek, R. Mülhaupt, R. Xu, G. Klatt, H. Köppel and M. Enders
    Angew. Chem. Int. Ed. 49 (2010), 8751
    Hydridoboranes as modifiers for single−site organochromium catalysts: from low− to ultrahigh−molecular−weight polyethylene

67. E. V. Gromov, A. B. Trofimov, F. Gatti and H. Köppel
    J. Chem. Phys. 133 (2010), 164309
    Theoretical study of photoinduced ring−opening in furan

68. S. Gómez−Carrasco, T. Müller and H. Köppel
    J. Phys. Chem. A 114 (2010), 11436
    Ab initio study of the VUV−induced multistate photodynamics of formaldehyde

69. E. Gindensperger, H. Köppel and C. Daniel
    Chem. Commun. 46 (2010), 8225
    Mechanism of visible−light photoisomerization of a rhenium(I) carbonyl−diimine complex

70. I. Baldea, H. Köppel and L. S. Cederbaum
    Phys. Stat. Solidi C7 11-12 (2010), 2671
    Characterization of assembled quantum dots and single−electron transistors by photoemission and photoabsorption

71. I. Bâldea and H. Köppel
    Phys. Rev. B 81 (2010), 193401
    Sources of negative differential resistance in electric nanotransport

72. I. Bâldea and H. Köppel
    Phys. Rev. B 81 (2010), 125322
    Single−electron transistors studied by microwave and far−infrared absorption: Theoretical results and experimental proposal

73. I. Bâldea and H. Köppel
    Phys. Rev. B 82 (2010), 087302
    Reply to ''Comment on 'Electron transport through correlated molecules computed using the time−independent Wigner function: two critical tests' ''

74. I. Bâldea, H. Köppel, R. Maul and W. Wenzel
    J. Chem. Phys. 133 (2010), 014108
    Applying the extended molecule approach to correlated electron transport: Important insight from model calculations

75. G. A. Worth, H. Köppel, E. Gindensperger and L. S. Cederbaum
    in: Multidimensional Quantum Dynamics: MCTDH Theory and Applications, ed. H.-D. Meyer and F. Gatti and G. A. Worth, Wiley−VCH, Weinheim (2009)
    Multidimensional non−adiabatic dynamics

76. D. B. Werz, G. Klatt, J. A. Raskatov, H. Köppel and R. Gleiter
    Organometallics 28 (2009), 1675−1682
    CpCo−Mediated Reactions of Cyclopropenones: A DFT Study

77. P. Ottiger, S. Leutwyler and H. Köppel
    J. Chem. Phys. 131 (2009), 204308
    S1/S2 excitonic splittings and vibronic coupling in the excited state of the jet−cooled 2−aminopyridine dimer

78. H. Köppel, H. Barentzen and D. R. Yarkony, eds.
    The Jahn−Teller Effect: Fundamentals and Applications in Physics and Chemistry, Springer Series in Chemical Physics 97
    Springer, Heidelberg (2009)
    

79. S. Faraji, E. Gindensperger and H. Köppel
    Springer Series in Chemical Physics 97 (2009), 239−276
    Multi−mode Jahn−Teller and pseudo Jahn−Teller effects in benzenoid cations

80. I. Baldea and H. Köppel
    Phys. Rev. B 79 (2009), 165317
    Studying the Single−Electron Transistor by Photoionization

81. I. Baldea and H. Köppel
    Phys. Rev. B 80 (2009), 165301
    Critical analysis of a variational method used to describe molecular electronic transport

82. R. Xu, M. Bittner, G. Klatt and H. Köppel
    J. Phys. Chem. A 112 (2008), 13139−13148
    Influence of Ligands on the Dynamics of Hydrogen Elimination in Cationic Complexes of Co and Rh

83. G. A. Worth, H.−D. Meyer, H. Köppel and L. S. Cederbaum
    Int. Rev. in Phys. Chem. 27 (2008), 569
    Using the MCTDH wavepacket propagation method to describe multimode non−adiabatic dynamics

84. H. Köppel, B. Schubert and H. Lischka
    Chem. Phys. 343 (2008), 319
    Conical intersections and strong nonadiabatic coupling effects in singlet−excited acetylene: An ab initio quantum dynamical study

85. M. de Groot, E. Gromov, H. Köppel and W. J. Buma
    J. Phys. Chem. B 112 (2008), 4427
    High−Resolution Spectroscopy of Methyl 4−Hydroxycinnamate and its Hydrogen−Bonded Water Complex

86. S. Gomez−Carrasco and H. Köppel
    Chem. Phys. 346 (2008), 81
    Ab initio study of the Renner−Teller effect in the X²Π electronic state of the OHF⁻ anion

87. S. Faraji, H. Köppel, W Eisfeld and S. Mahapatra
    Chem. Phys. 347 (2008), 110
    Towards a higher−order description of Jahn−Teller coupling effects in molecular spectroscopy: The A² E state of NO₃

88. S. Faraji, H.−D. Meyer and H. Köppel
    J. Chem. Phys. 129 (2008), 074311
    Multistate vibronic interactions in difluorobenzene radical cations. II Quantum dynamical simulations.

89. S. Faraji and H. Köppel
    J. Chem. Phys. 129 (2008), 074310
    Multistate vibronic interactions in difluorobenzene radical cations. I Electronic structure calculations.

90. I. Baldea and H. Köppel
    Phys. Rev. B 78 (2008), 115315
    Electron transport through correlated molecules computed using the time−independent Wigner function: Two critical tests

91. S. Amaran, S. Kumar and H. Köppel
    J. Chem. Phys. 128 (2008), 124305
    Ab initio potential energy surfaces and nonadiabatic interactions in the H⁺ + NO collision system

92. T. S. Venkatesan, S. Mahapatra, H.−D. Meyer, H. Köppel and L. S. Cederbaum
    J. Phys. Chem. A 111 (2007), 1746
    Multimode Jahn−Teller and Pseudo−Jahn−Teller in the cyclopropane radical cation: Complex vibronic spectra and nonradiative decay dynamics

93. T. S. Venkatesan, S. Mahapatra, H. Köppel and L. S. Cederbaum
    J. Mol. Struct. 838 (2007), 100
    On the Jahn−Teller and pseudo−Jahn−Teller effects in the photoelectron spectrum of cyclopropane

94. S. Mahapatra, W. Eisfeld and H. Köppel
    Chem. Phys. Lett. 441 (2007), 7
    Effects of multimode Jahn−Teller coupling in the photodetachment spectrum of the nitrate anion (NO₃⁻)

95. E. V. Gromov, I. Burghardt, H. Köppel and L. S. Cederbaum
    J. Am. Chem. Soc. 129 (2007), 6798
    Electronic structure of the PYP chromophore in its native protein environment

96. E. V. Gromov, I. Burghardt, J. T. Hynes, H. Köppel and L. S. Cederbaum
    J. Photochem. Photobiol. A: Chem. 190 (2007), 241
    Electronic structure of the photoactive yellow protein chromophore: Ab initio study of the low−lying excited singlet states

97. E. Gindensperger, I. Baldea, J. Franz and H. Köppel
    Chem. Phys. 338 (2007), 207
    Multi−state vibronic interactions in the fluorobenzene radical cation: The importance of quadratic coupling terms

98. E. Gindensperger, H. Köppel and L. S. Cederbaum
    J. Chem. Phys. 126 (2007), 034106
    Hierarchy of effective modes for the dynamics through conical intersections in macrosystems

99. C. Bleiholder, R. Gleiter, D. B. Werz and H. Köppel
    Inorg. Chem. 46 (2007), 2249
    Theoretical Investigations on Heteronuclear Chalcogen−Chalcogen Interactions: On the Nature of Weak Bonds between Chalcogen Centers

100. M. Bittner, H. Köppel and F. Gatti
     J. Phys. Chem. A 111 (2007), 2407
     Multidimensional Quantum Dynamical Study of beta−Hydrogen Transfer in a Cationic Rhodium Complex

101. I. Baldea, J. Franz and H. Köppel
     J. Mol. Struct. 838 (2007), 94
     Jahn−Teller and related conical intersections in the benzene radical cation and the monofluoro dervative

102. H. Köppel
     in: Quantum Dynamics of Complex Molecular Systems, ed. D. A. Micha and I. Burghardt, Springer, Heidelberg (2006)
     Nonadiabatic Multimode Dynamics at Symmetry−Allowed Conical Intersections

103. H. Köppel and B. Schubert
     Mol. Phys. 104 (2006), 1069−1079
     The concept of regularized diabatic states for a general conical intersection

104. M. de Groot, W. J. Buma, E. V. Gromov, I. Burghardt, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 125 (2006), 204303
     Combined experimental−theoretical study of the lower excited singlet states of paravinyl phenol, an analog of the paracoumaric acid chromophore

105. C. Bleiholder, D. B. Werz, H. Köppel and R. Gleiter
     J. Am. Chem. Soc. 128 (2006), 2666−2674
     Theoretical investigations on chalcogen−chalcogen interactions: what makes these nonbonded interactions bonding?

106. I. Baldea, J. Franz, P. G. Szalay and H. Köppel
     Chem. Phys. 329 (2006), 65−75
     Multi−mode vibronic interactions in the five lowest electronic states of the fluorobenzene radical cation

107. I. Baldea and H. Köppel
     J. Chem. Phys. 124 (2006), 064101
     Multistate multimode vibronic dynamics: entanglement of electronic and vibrational degrees of freedom in the benzene radical cation

108. H. Wadepohl, U. Kohl, M. Bittner and H. Köppel
     Organometallics 24 (2005), 2097−2105
     Experimental and theoretical study of the hydride migration to ethylene in an electron−rich cobalt complex

109. B. Schubert, H. Köppel and H. Lischka
     J. Chem. Phys. 122 (2005), 184312
     A wave−packet simulation of the low−lying singlet electronic transitions of acetylene

110. B. J. Rao, S. Mahapatra, H. Köppel and M. Jungen
     J. Chem. Phys. 123 (2005), 134325
     On the Exe−Jahn−Teller conical intersections in the 3p(E') and 3d(E'') Rydberg electronic states of triatomic hydrogen

111. A. Markmann, G. A. Worth, S. Mahapatra, H.−D. Meyer, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 123 (2005), 204310
     Simulation of a complex spectrum: Interplay of five electronic states and 21 vibrational degrees of freedom in C₅H₄⁺

112. S. Mahapatra, V. Vallet, C. Woywod, H. Köppel and W. Domcke
     J. Chem. Phys. 123 (2005), 231103
     Remarkable impact of intermode couplings on multimode vibronic dynamics: the photoelectron spectrum of CH₃F

113. E. V. Gromov, I. Burghardt, H. Köppel and L. S. Cederbaum
     J. Phys. Chem. A 109 (2005), 4623−4631
     Impact of sulfur vs oxygen on the low−lying excited states of trans−p−coumaric acid and trans−p−coumaric thio acid

114. G. A. Worth, H.−D. Meyer and L. S. Cederbaum
     in: Conical Intersections, ed. W. Domcke, D. R. Yarkony and H. Köppel, World Scientific, NJ, Singapore (2004)
     Multidimensional dynamics involving a conical intersection: Wavepacket calculations using the MCTDH method

115. T. S. Venkatesan, S. Mahapatra, L. S. Cederbaum and H. Köppel
     J. Phys. Chem. A 108 (2004), 2256
     Theoretical investigation of Jahn−Teller dynamics in the 2E' electronic ground state of the cyclopropane radical cation

116. S. Mahapatra, V. Vallet, C. Woywod, H. Köppel and W. Domcke
     Chem. Phys. 304 (2004), 17−34
     Multimode Jahn−Teller and pseudo−Jahn−Teller coupling effects in the photoelectron spectrum of CH₃F

117. H. Köppel
     in: CCP6 booklet on "Quantum dynamics at conical intersections", ed. G. A. Worth and S. C. Althorpe, , (2004)
     Quantum dynamics at conical intersections treated within the multi−mode vibronic coupling approach and its generalizations

118. H. Köppel
     in: Conical Intersections, ed. W. Domcke, D. R. Yarkony and H. Köppel, World Scientific, NJ, Singapore (2004)
     Jahn−Teller and pseudo Jahn−Teller vibronic dynamics

119. H. Köppel, W. Domcke and L. S. Cederbaum
     in: Conical Intersections, ed. W. Domcke, D.R. Yarkony and H. Köppel, World Scientific, NJ, (2004)
     The multi−mode vibronic−Coupling approach

120. H. Köppel
     Faraday Discuss. 127 (2004), 35−47
     Regularized diabatic states and quantum dynamics on intersecting potential energy surfaces

121. H. Köppel, E. V. Gromov and A. B. Trofimov
     Chem. Phys. 304 (2004), 35−49
     Multi−mode multi−state quantum dynamics of key five−membered heterocycles: spectroscopy and ultrafast internal conversion

122. H. Köppel
     in: Conical Intersections, ed. W. Domcke, D. R. Yarkony and H. Köppel, World Scientific, NJ, Singapore (2004)
     Methods for the construction of diabatic electronic states

123. W. Domcke, D. R. Yarkony and H. Köppel, eds.
     Conical Intersections, Advanced Series in Physical Chemistry 15
     World Scientific, NJ, Singapore (2004)
     

124. E. V. Gromov, A. B. Trofimov, N. M. Vitkovskaya, H. Köppel, J. Schirmer, H.−D. Meyer and L. S. Cederbaum
     J. Chem. Phys. 121 (2004), 4585
     Theoretical study of excitations in furan: Spectra and molecular dynamics

125. L. S. Cederbaum
     in: Conical Intersections, ed. W. Domcke, D.R. Yarkony and H. Köppel, World Scientific, NJ, (2004)
     Born−Oppenheimer approximation and beyond

126. M. Bittner and H. Köppel
     J. Phys. Chem. A 108 (2004), 11116
     Quantum dynamical study of beta−hydrogen transfer in two selected late−transition metal complexes

127. I. Baldea and H. Köppel
     Eur. Phys. J. D 30 (2004), 209−215
     Three−dimensional vibronic analysis of the B' system of Na₃

128. I. Baldea, H. Köppel and L. S. Cederbaum
     Phys. Rev. B 69 (2004), 075307
     Impact of phonons on quantum phase transitions in nanorings of coupled quantum dots

129. C. Woywod, S. Scharfe, R. Krawczyk, W. Domcke and H. Köppel
     J. Chem. Phys. 118 (2003), 5880−5893
     Theoretical investigation of Jahn−Teller and pseudo−Jahn−Teller interactions in the ammonia cation

130. A. B. Trofimov, E. V. Gromov, H. Köppel, J. Schirmer, K. C. Prince, R. Richter, M. De Simone and M. Coreno
     J. Phys. B 36 (2003), 3805−3816
     A theoretical study of the ¹B₁(O1s→π^*) and ¹A₁(O1s→3s) excited states of formaldehyde

131. A. Thiel, J. Schirmer and H. Köppel
     J. Chem. Phys. 119 (2003), 2088−2101
     An intermediate state representation approach to K−shell ionization in molecules. II. Computational tests

132. J. Schmidt−Klügmann, H. Köppel, S. Schmatz and P. Botschwina
     Chem. Phys. Lett. 369 (2003), 21−30
     Bilinear Jahn−Teller coupling effects in the methoxy radical: impact on photoelectron spectra and spin−orbit splittings

133. H. Köppel, I. Baldea and P. G. Szalay
     Adv. in Quantum Chem. 44 (2003), 200−217
     Combined Jahn−Teller and pseudo Jahn−Teller effects in the benzene radical cation

134. E. V. Gromov, A. B. Trofimov, N. M. Vitkovskaya, J. Schirmer and H. Köppel
     J. Chem. Phys. 119 (2003), 737−753
     Theoretical study of the low−lying excited singlet states of furan

135. M. Bittner and H. Köppel
     Phys. Chem. Chem. Phys. 5 (2003), 4604−4611
     Reaction path description of the vinylidene−acetylene isomerization

136. H. Köppel, M. Döscher, I. Baldea, H.−D. Meyer and P. G. Szalay
     J. Chem. Phys. 117 (2002), 2657−2671
     Multistate vibronic interactions in the benzene radical cation. II. Quantum dynamical simulations

137. M. Döscher, H. Köppel and P. G. Szalay
     J. Chem. Phys. 117 (2002), 2645−2656
     Multistate vibronic interactions in the benzene radical cation. I. Electronic structure calculations

138. A. B. Trofimov, T. E. Moskovskaya, E. V. Gromov, H. Köppel and J. Schirmer
     Phys. Rev. A 64 (2001), 022504
     Theoretical study of K−shell excitations in formaldehyde

139. R. Schork and H. Köppel
     Phys. Chem. Chem. Phys. 3 (2001), 891−894
     Theoretical investigation of the photoelectron spectra of the vinylidene anions

140. R. Schork and H. Köppel
     J. Chem. Phys. 115 (2001), 7907−7923
     Barrier recrossing in the vinylidene−acetylene isomerization reaction: A five−dimensional ab initio quantum dynamical investigation

141. K. Malsch, G. Hohlneicher, R. Schork and H. Köppel
     Phys. Chem. Chem. Phys. 3 (2001), 5393−5407
     A quantum dynamical investigation of the vibronic structure of singlet and triplet spectra of acetylene

142. S. Mahapatra, G. A. Worth, H. −D. Meyer, L. S. Cederbaum and H. Köppel
     J. Phys. Chem. A 105 (2001), 5567−5576
     The A²E B²B₂ photoelectron bands of allene beyond the linear coupling scheme: An ab initio dynamical study including all fifteen vibrational modes

143. S. Mahapatra, H. Köppel and L. S. Cederbaum
     J. Phys. Chem. A 105 (2001), 2321
     Reactive scattering dynamics on conically intersecting potential energy surfaces: The H+H₂ exchange reaction

144. H. Köppel, J. Gronki and S. Mahapatra
     J. Chem. Phys. 115 (2001), 2377−2388
     Construction scheme for regularized diabatic states

145. I. Baldea, H. Köppel and L. S. Cederbaum
     Synthetic Metals 119 (2001), 561
     Tunneling−driven quantum phase transitions in mesoscopic commensurate systems

146. I. Baldea, H. Köppel and L. S. Cederbaum
     Eur. Phys. J. B 20 (2001), 289
     Collective quantum tunneling of strongly correlated electrons in commensurate mesoscopic rings

147. I. Baldea, H. Köppel and L. S. Cederbaum
     Phys. Rev. B 63 (2001), 155308
     Symmetry−adapted BCS−type trial wave functions for mesoscopic rings

148. R. Schork and H. Köppel
     Chem. Phys. Lett. 326 (2000), 277−282
     Unexpected stability of vinylidene from 5D ab initio quantum−dynamical calculations

149. S. Mahapatra, H. Köppel, L. S. Cederbaum, P. Stampfuß and W. Wenzel
     Chem. Phys. 259 (2000), 211−226
     Nonadiabatic wave packet dynamics on the coupled X²A₁/A²B₂ electronic states of NO₂ based on new ab initio potential energy surfaces

150. H. Köppel, M. Döscher and S. Mahapatra
     Int. J. Quant. Chem. 80 (2000), 942−949
     Femtosecond wavepacket dynamics on strongly coupled potential energy surfaces

151. U. Höper, P. Botschwina and H. Köppel
     J. Chem. Phys. 112 (2000), 4132−4142
     Theoretical study of the Jahn−Teller effect in X²E CH₃O

152. I. Baldea, H. Köppel and L. S. Cederbaum
     Solid State Comm. 115 (2000), 593−597
     Tunneling−driven quantum phase transitions in mesoscopic commensurate systems of strongly correlated electrons

153. A. Thiel and H. Köppel
     J. Chem. Phys. 110 (1999), 9371−9383
     Proposal and numerical test of a simple diabatization scheme.

154. J. Schön and H. Köppel
     J. Phys. Chem. 103 (1999), 8579−8584
     Excitation of pseudorotational vibronic motion through fs pump−probe spectroscopy: a 2D computational study

155. S. Mahapatra, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 110 (1999), 5691−5701
     Impact of nonadiabatic coupling between the conically intersecting X²A₁ and A²B₂ states of NO₂ on the negative ion photoelectron spectra of NO⁻₂.

156. S. Mahapatra and H. Köppel
     Chem. Phys. Lett. 306 (1999), 387−394
     Semiclassical approch to the Rydberg emission spectra of H₃ and its isotopomers.

157. S. Mahapatra, L. S. Cederbaum and H. Köppel
     J. Chem. Phys. 111 (1999), 10452−10463
     Theoretical investigation of Jahn−Teller and pseudo Jahn−Teller coupling effects on the photoelectron spectrum of allene

158. N. Dobrodey, H. Köppel and L. S. Cederbaum
     Phys. Rev. A 60 (1999), 1988−1998
     Vibrational structure of the O1s ionization spectrum of CO₂

159. I. Baldea, H. Köppel and L. S. Cederbaum
     Phys. Rev. B 60 (1999), 6646−6654
     Structural and magnetic transitions in ensembles of mesoscopic Peierls rings in a magnetic flux

160. I. Baldea, H. Köppel and L. S. Cederbaum
     Synthetic Metals 101 (1999), 394
     Structural change in mesoscopic Peierls chains

161. I. Baldea, H. Köppel and L. S. Cederbaum
     J. Phys. Soc. Japan 68 (1999), 1954−1962
     Quantum phonon fluctuations in mesoscopic dimerized systems

162. H. Köppel and W. Domke
     in: Encyclopedia of computational chemistry, ed. P.v.R Schleyer, Wiley, (1998)
     Vibronic dynamics in polyatomic molecules

163. A. B. Trofimov, H. Köppel and J. Schirmer
     J. Chem. Phys. 109 (1998), 1025−1040
     Vibronic structure of the valence π−photoelectron bands in furan, pyrrole and thiophene.

164. R. Schork and H. Köppel
     Theoretical Chemistry Accounts 100 (1998), 204−211
     Ab initio quantum dynamical study of the vinylidene−acetylene isomerization.

165. J. Schön and H. Köppel
     J. Chem. Phys. 108 (1998), 1503−1515
     Geometric phases and quantum dynamics in spin−orbit coupled systems.

166. S. Mahapatra and H. Köppel
     Phys. Rev. Lett. 81 (1998), 3116−3119
     Quantum mechanical study of optical emission spectra of Rydberg−excited H₃ and its isotopomers

167. S. Mahapatra and H. Köppel
     J. Chem. Phys. 109 (1998), 1721−1733
     Spectra and time−dependent dynamics of H₃ near the conical intersection in the (2p)1E' ground electronic manifold.

168. I. Baldea, H. Köppel and L. S. Cederbaum
     Solid State Communications 106 (1998), 733
     How small can a Peierls dimerized chain be?

169. I. Baldea, H. Köppel and L. S. Cederbaum
     Solid State Commun. 108 (1998), 607
     Interplay between dia− and paramagnetism in ensembles of mesoscopic Peierls rings in a magnetic flux

170. I. Baldea, H. Köppel and L. S. Cederbaum
     Eur. Phys. J. B 3 (1998), 507
     The smooth structural change in mesoscopic Peierls chains

171. H. Köppel, F. X. Gadea, G. Klatt, J. Schirmer and L. S. Cederbaum
     J. Chem. Phys. 106 (1997), 4415
     Multistate vibronic coupling effects in the K−shell excitation spectrum of ethylene: Symmetry breaking and core−hole localization.

172. H. Köppel
     Z. für Physikal. Chemie 200 (1997), 3−10
     Examples of Jahn−Teller coupling effects in molecular spectroscopy and internal conversion dynamics.

173. B. Kempgens, B. S. Itchkawitz, J. Feldhaus, A. M. Bradshaw, H. Köppel, M. Döscher, F. X. Gadea and L. S. Cederbaum
     Chem. Phys. Lett. 277 (1997), 436
     Vibronic coupling in the K−shell excitation of ethyne

174. B. Kempgens, H. Köppel, A. Kivimäki, M. Neeb, L. S. Cederbaum and A. M. Bradshaw
     Phys. Rev. Lett. 79 (1997), 3617
     Core level energy splitting in the C1s photoelectron spectrum of C₂H₂.

175. M. Döscher and H. Köppel
     Chem. Phys. 225 (1997), 93−105
     Multiple surface intersections and strong nonadiabatic coupling effects between the D²E_1u and E²B_2u states of C₆H₆⁺.

176. I. Baldea, H. Köppel and L. S. Cederbaum
     Synthetic Metals 86 (1997), 2221
     Electron−phonon coupling in a one−band MX−chain model. A numerical study.

177. I. Baldea, H. Köppel and L. S. Cederbaum
     Phys. Rev. B 55 (1997), 1481
     Finite−size effects and quantum phonon fluctuations in the optical absorption edge of dimerized chains

178. M. Mayer, L. S. Cederbaum and H. Köppel
     J. Chem. Phys. 104 (1996), 8932
     Rovibronic coupling in the Na₃B system

179. D. M. Leitner, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 104 (1996), 434
     Statistical properties of molecular spectra and molecular dynamics: Analysis of their correspondence in NO₂ and C₂H₄⁺

180. J. Schön and H. Köppel
     J. Chem. Phys. 103 (1995), 9292−9301
     Geometric phase effects and wave packet dynamics on intersecting potential energy surfaces.

181. P. Müller, S. Huck, H. Köppel, H. Pritzkow and W. Siebert
     Z. Naturforsch. 50 (1995), 1476−1484
     Synthese und Strukturen von 9,10−Dihydro−9,10−diboraanthracen−Derivaten.

182. M. Yu. Lavrentiev, H. Köppel and L. S. Cederbaum
     Phys. Rev. B 51 (1995), 5790
     Phonons in one−dimensional Peierls systems with internal degrees of freedom

183. B. Kempgens, B. S. Itchkawitz, K. J. Randall, J. Feldhaus, A. M. Bradshaw, H. Köppel, F. X. Gadea, D. Nordfors, J. Schirmer and L. S. Cederbaum
     Chem. Phys. Lett. 246 (1995), 347
     Dynamic effects in the C1s excitation spectra of ethene isotopomers

184. R. F. Gunion, H. Köppel, G. W. Leach and W. C. Lineberger
     J. Chem. Phys. 103 (1995), 1250−1262
     Photoelectron spectroscopy of C₄H₄⁻; ab initio calculations and dynamics of the 1,2−Hydrogen shift in vinylvinylidene.

185. I. Baldea, H. Köppel and L. S. Cederbaum
     Solid State Communications 93 (1995), 817
     Analytical results in CDW systems beyond the strong pinning limit

186. I. Baldea, L. S. Cederbaum and H. Köppel
     J. Phys. Soc. Jpn. 64 (1995), 356
     Analytical explanation for numerical simulation results on CDW

187. I. Baldea, H. Köppel and L. S. Cederbaum
     Phys. Rev. B 52 (1995), 11845
     Coexistence of short− and large−scale phase variations in a charge−density wave weakly coupled to impurities

188. R. Skodje, R. Sadeghi, H. Köppel and J. Krause
     J. Chem. Phys. 101 (1994), 1725−1729
     Spectral quantization of transition state dynamics for the three−dimensional H+H₂ reaction.

189. J. Schön and H. Köppel
     Chem. Phys. Lett. 231 (1994), 55−63
     Femtosecond time−resolved ionization spectroscopy of Na₃(B) and the question of the geometric phase.

190. H. Müller and H. Köppel
     Chem. Phys. 183 (1994), 107−116
     Adiabatic wave−packet motion on conically intersecting potential energy surfaces: the case of SO₂(¹B₁−¹A₂).

191. H. Müller, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 101 (1994), 10263
     Three dimensional nuclear dynamics on conically intersecting potential energy surfaces of O₃⁺ (²A₁−²B₂ )

192. M. Mayer, L. S. Cederbaum and H. Köppel
     J. Chem. Phys. 100 (1994), 899
     Ground state dynamics of NO₃: multimode vibronic borrowing including thermal effects

193. D. M. Leitner, H. Köppel and L. S. Cederbaum
     Phys. Rev. Lett. 73 (1994), 2970
     Effects of symmetry breaking on spectra of chaotic Hamiltonian systems

194. H. Köppel and R. Meiswinkel
     Z. Phys. D 32 (1994), 153−156
     Point−charge model for vibronic coupling constants of metal atom trimers.

195. S.−L. Drechsler, J. Malek, M. Lavrentiev and H. Köppel
     Phys. Rev. B 49 (1994), 233−243
     Optical phonons of alternating chains with 3/4−filled bands and internal degrees of freedom: A simple model for Ca₂CuO₃.

196. T. Pacher, L. S. Cederbaum and H. Köppel
     Adv. Chem. Phys. 84 (1993), 293
     Adiabatic and quasidiabatic states in a gauge theoretical framework

197. H. Müller, H. Köppel and L. S. Cederbaum
     New J. Chem. 17 (1993), 7
     Topology and dynamics of vibronically coupled potential energy surfaces: General aspects and application to the ozone cation

198. R. Meiswinkel and H. Köppel
     Chem. Phys. Lett. 201 (1993), 449−457
     Combined Jahn−Teller and Pseudo−Jahn−Teller effects in the P₄⁺ cation.

199. M. Lavrentiev, H. Köppel and M. C. Boehm
     Chem. Phys. 169 (1993), 85−102
     Theoretical study of the multimode Peierls distortion in the polydecker sandwich compound [Ni(C₃B₂H₅)]_∈fty.

200. M. Yu. Lavrentiev, H. Köppel and L. S. Cederbaum
     Z. Phys. B 91 (1993), 481
     Peierls instabilities in one−dimensional systems with Jahn−Teller−active monomers

201. M. Lavrentiev, H. Köppel and M. C. Boehm
     Synth. Metals 55-57 (1993), 4644−4649
     Electronic structure and multimode Peierls distortions in the one−dimensional polydecker Ni(H₅C₃B₂)_∞.

202. H. Köppel
     Chem. Phys. Lett. 205 (1993), 361−370
     New ultrafast nonradiative decay mechanism in the benzene radical cation.

203. S. −L. Drechsler, J. Malek, H. Eschrig, H. Köppel and L. S. Cederbaum
     Synthetic Metals 57 (1993), 4272
     Nonlinear defect states in AB−chains with internal degrees of freedom

204. H. Müller, H. Köppel, L. S. Cederbaum, T. Schmelz, G. Chambaud and P. Rosmus
     Chem. Phys. Lett. 197 (1992), 599
     Vibronic coupling effects in the ozone cation

205. L. S. Cederbaum and H. Köppel
     J. Phys. A 25 (1992), L311
     The distorted Jahn−Teller effect.

206. T. Schmelz, G. Chambaud, P. Rosmos, H. Köppel, L. S. Cederbaum and H.−J. Werner
     Chem. Phys. Lett. 183 (1991), 209
     Electronic states of the O₃⁺ radical cation

207. T. Pacher, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 95 (1991), 6668
     Quasidiabatic states from ab initio calculations by block diagonalization of the electronic Hamiltonian: Use of frozen orbitals

208. R. Meiswinkel and H. Köppel
     Z. Phys. D 19 (1991), 63−66
     A pseudo−Jahn−Teller treatment of the B system of Na₃.

209. U. Manthe and H. Köppel
     Chem. Phys. Lett. 178 (1991), 36−42
     Three−dimensional wave packet dynamics on vibronically coupled dissociative potential energy surfaces.

210. U. Manthe, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 95 (1991), 1708
     Dissociation and predissociation on coupled electronic potential energy surfaces: A three−dimensional wave packet dynamical study

211. F. X. Gadea, H. Köppel, J. Schirmer, L. S. Cederbaum, K. J. Randall, A. M. Bradshaw, Y. Ma, F. Sette and C. T. Chen
     Phys. Rev. Lett. 66 (1991), 883
     Vibronic coupling and core−hole localization in K−shell excitations of ethylene

212. F. Fischer, H. Köppel and L. S. Cederbaum
     Synthetic Metals 41 (1991), 3597
     Multimode Peierls distortions

213. R. Schneider, W. Domcke and H. Köppel
     J. Chem. Phys. 92 (1990), 1045−1061
     Aspects of dissipative electronic and vibrational dynamics of strongly vibronically coupled systems.

214. E. Ohrendorf, H. Köppel, L. S. Cederbaum, F. Tarantelli and A. Sgamellotti
     J. Electr. Spectrosc. 51 (1990), 211
     On the Auger spectrum of ethylene

215. R. Meiswinkel and H. Köppel
     Chem. Phys. 144 (1990), 117−128
     A Pseudo−Jahn−Teller Treatment of the Pseudorotational Spectrum of Na₃.

216. U. Manthe and H. Köppel
     J. Chem. Phys. 93 (1990), 345−356
     New method for calculating wavepacket dynamics: strongly coupled surfaces and the adiabatic basis.

217. U. Manthe and H. Köppel
     J. Chem. Phys. 93 (1990), 1658−1669
     Dynamics on potential energy surfaces with a conical intersection: adiabatic, intermediate and diabatic behaviour.

218. Th. Zimmermann, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 91 (1989), 3934
     Statistical fluctuations of decay rates

219. T. Pacher, C. A. Mead, L. S. Cederbaum and H. Köppel
     J. Chem. Phys. 91 (1989), 7057
     Gauge theory and quasidiabatic states in molecular physics

220. E. Ohrendorf, H. Köppel, L. S. Cederbaum, F. Tarantelli and A. Sgamellotti
     J. Chem. Phys 91 (1989), 1734
     Doubly ionized states of ethylene: Auger spectrum, potential energy surfaces and nuclear dynamics

221. R. Meiswinkel and H. Köppel
     Chem. Phys. 129 (1989), 463−476
     Impact of totally symmetric vibrations on the E x e Jahn−Teller effect.

222. F. Fischer, H. Köppel and L. S. Cederbaum
     Z. Phys. B 74 (1989), 513
     Influence of internal degrees of freedom on the structure of one−dimensional systems

223. L. S. Cederbaum, F. Tarantelli, H. G. Weikert, M. K. Scheller and H. Köppel
     Angew. Chem. Int. Ed. Engl. 28 (1989), 761
     Diisocyan oder Cyanisocyan.

224. Th. Zimmermann, H. Köppel, L. S. Cederbaum, G. Persch and W. Demtröder
     Phys. Rev. Lett. 61 (1988), 3
     Confirmation of random−matrix fluctuations in molecular spectra

225. Th. Zimmermann, L. S. Cederbaum and H. Köppel
     Ber. Bunsenges. Phys. Chem. 92 (1988), 217
     Statistical properties of energy levels in non−Born−Oppenheimer systems

226. G. Persch, E. Medizadeh, W. Demtröder, Th. Zimmermann, H. Köppel and L. S. Cederbaum
     Ber. Bunsenges. Phys. Chem. 92 (1988), 312
     Vibronic level density of excited NO₂−states and its statistical analysis

227. T. Pacher, L. S. Cederbaum and H. Köppel
     J. Chem. Phys. 89 (1988), 7367
     Approximately diabatic states from blockdiagonalization of the electronic Hamiltonian

228. E. Ohrendorf, L. S. Cederbaum and H. Köppel
     Chem. Phys. Lett. 151 (1988), 273
     On multidimensional avoided crossings of potential energy surfaces

229. H. Köppel, L. S. Cederbaum and W. Domcke
     J. Chem. Phys. 89 (1988), 2023−2040
     Interplay of Jahn−Teller and pseudo Jahn−Teller vibronic dynamics in the benzene cation.

230. F. Fischer, H. Köppel and L. S. Cederbaum
     Phys. Rev. B 37 (1988), 9477
     Non−Peierls structural phase transitions in one−dimensional Peierls systems

231. L. S. Cederbaum, Th. Zimmermann, K. Köppel and H.−D. Meyer
     in: Fractals, Quasicrystals, Chaos, Knots and Algebraic Quantum Mechanics, ed. A. Amann, L. S. Cederbaum and W. Gans, Kluwer Academic Publ., London (1988)
     Statistical properties of energy levels and connection to classical mechanics

232. Th. Zimmermann, L. S. Cederbaum, H.−D. Meyer and H. Köppel
     J. Phys. Chem. 91 (1987), 4446
     Statistical properties of energy levels

233. Th. Zimmermann, H. Köppel, H.−D. Meyer and L. S. Cederbaum
     Physica Scripta 35 (1987), 125
     Energy level statistics of coupled oscillators

234. F. Fischer, H. Köppel and L. S. Cederbaum
     Il Nuovo Cimento Lett. 9 (1987), 571
     Influence of internal degrees of freedom on the structure of one−dimensional systems

235. W. Domcke, H. Köppel and L. S. Cederbaum
     in: Stochasticity and Intermolecular Redistribution of Energy, ed. R. Lefebvre and S. Mukamel, Reidel Publ. Company, (1987)
     Conical intersections and ultrafast radiationless decay

236. W. Domcke and H. Köppel
     Chem. Phys. Lett. 140 (1987), 133−141
     Model calculation on the pump−probe measurement of ultrafast electronic population decay in polyatomic molecules.

237. Th. Zimmermann, H.−D. Meyer, H. Köppel and L. S. Cederbaum
     Phys. Rev. A 33 (1986), 4334
     Manifestation of classical chaos in the statistics of quantum energy levels

238. Th. Zimmermann, H. Köppel and L. S. Cederbaum
     J. Chem. Phys. 83 (1985), 4697
     On the bilinear vibronic coupling mechanism

239. E. Haller, H. Köppel and L. S. Cederbaum
     J. Mol. Spectrosc. 111 (1985), 377
     The visible absorption spectrum of NO₂: a three−mode nuclear dynamics investigation

240. R. Gleiter, H. Köppel, P. Hofmann, H. R. Schmidt and J. Ellermann
     Inorg. Chem. 24 (1985), 4020
     Electronic structure of the P3, As3 and Sb3 units in a nortricyclane skeleton

241. H.−D. Meyer, E. Haller, H. Köppel and L. S. Cederbaum
     J. Phys. A 17 (1984), L831
     On the connection between irregular trajectories and the distribution of quantum level spacings

242. H.−D. Meyer and H. Köppel
     J. Chem. Phys. 81 (1984), 2605−2619
     Time evolution of fluorescence and strong nonadiabatic effects.

243. H. Köppel, W. Domcke and L. S. Cederbaum
     Adv. Chem. Phys. 57 (1984), 59−246
     Multimode molecular dynamics beyond the Born−Oppenheimer approximation.

244. H. Köppel, L. S. Cederbaum and W. Domcke
     Chem. Phys. Lett. 110 (1984), 469
     Strong non−adiabatic effects in C₂D₄⁺

245. H. Köppel and H.−D. Meyer
     Chem. Phys. Lett. 107 (1984), 149−154
     Novel aspects of ultrafast non−radiative processes.

246. E. Haller, H. Köppel and L. S. Cederbaum
     Phys. Rev. Lett. 52 (1984), 1665
     Uncovering the transition from regularity to irregularity in a quantum system

247. H. Köppel
     Chem. Phys. 77 (1983), 359−375
     Ultrafast non−radiative decay via conical intersections of molecular potential energy surfaces: C₂H₄⁺.

248. H. Köppel, L. S. Cederbaum, W. Domcke and S. S. Shaik
     Angew. Chem. Int. Ed. Engl. 22 (1983), 210−224
     Symmetriebrechung und nicht−Born−Oppenheimer−Effekt in Radikalkationen.

249. E. Haller, H. Köppel and L. S. Cederbaum
     Chem. Phys. Lett. 101 (1983), 215
     On the statistical behaviour of molecular vibronic energy levels

250. E. Haller, H. Köppel, L. S. Cederbaum, W. von Niessen and G. Bieri
     J. Chem. Phys. 78 (1983), 1359
     Multimode Jahn−Teller and pseudo−Jahn−Teller effects in BF₃⁺

251. H. Köppel, L. S. Cederbaum and W. Domcke
     J. Chem. Phys. 77 (1982), 2014−2022
     Strong nonadiabatic effects and conical intersections in molecular spectroscopy and unimolecular decay: C₂H₄⁺.

252. H. Köppel, L. S. Cederbaum and W. Domcke
     Chem. Phys. 69 (1982), 175
     Strong non−Condon effects induced by electron correlation: N₂O⁺

253. E. Haller, H. Köppel, L. S. Cederbaum, G. Bieri and W. von Niessen
     Chem. Phys. Lett. 85 (1982), 12
     Excitation of degenerate vibrations in non−degenerate electronic bands

254. L. S. Cederbaum and H. Köppel
     Chem. Phys. Lett 87 (1982), 14
     What happens when several closely lying electronic states interact through nuclear motion?

255. H. Köppel, W. Domcke and L. S. Cederbaum
     J. Chem. Phys. 74 (1981), 2945−2968
     Theory of vibronic coupling in linear molecules.

256. W. Domcke, H. Köppel and L. S. Cederbaum
     Mol. Phys. 43 (1981), 851
     Spectroscopic effects of conical intersections of molecular potential energy surfaces

257. L. S. Cederbaum, H. Köppel and W. Domcke
     Int. J. Quant. Chem. S 15 (1981), 251
     Multimode vibronic coupling effects in molecules

258. H. Köppel, E. Haller, L. S. Cederbaum and W. Domcke
     Mol. Phys. 41 (1980), 669−677
     Jahn−Teller effect for very strong coupling.

259. E. Haller, L. S. Cederbaum, W. Domcke and H. Köppel
     Chem. Phys. Lett. 72 (1980), 427
     Two−mode Jahn−Teller effect in NH₃⁺

260. L. S. Cederbaum, W. Domcke, J. Schirmer and H. Köppel
     J. Chem. Phys. 72 (1980), 1348
     Dynamical calculation of satellite intensities

261. H. Köppel and C. A. Coulson
     J. Mol. Spectr. 75 (1979), 64−69
     On the pure rotational spectrum of BF₃ in its vibronic ground state.

262. H. Köppel, L. S. Cederbaum, W. Domcke and W. von Niessen
     Chem. Phys. 37 (1979), 303−317
     Vibronic coupling in linear molecules and linear−to−bent transitions: HCN⁺.

263. H. Köppel, W. Domcke, L. S. Cederbaum and W. von Niessen
     J. Chem. Phys. 69 (1978), 4252
     Vibronic coupling effects in the photoelectron spectrum of ethylene

264. H. Köppel, W. Domcke, W. von Niessen and L. S. Cederbaum
     Mol. Phys. 35 (1978), 1283
     On the Jahn−Teller effect in NH₃⁺

265. L. S. Cederbaum, W. Domcke and H. Köppel
     Chem. Phys. 33 (1978), 319
     Jahn−Teller effect induced by non−degenerate vibrational modes in cumulenes

266. W. Domcke, L. S. Cederbaum, H. Köppel and W. von Niessen
     Mol. Phys. 34 (1977), 1759
     A comparison of different approaches to the calculation of Franck−Condon factors for polyatomic molecules

267. L. S. Cederbaum, W. Domcke, H. Köppel and W. von Niessen
     Chem. Phys. 26 (1977), 149
     Strong vibronic coupling effects in ionization spectra: the mystery band of butatriene