TY  - JOUR
  - Ruth*, A. A.,Doherty, W. G.,Brint, R. P.
  - 2002
  - January
  - Chemical Physics Letters
  - The 1A1(ππ*)←X1A1 transition in jet-cooled 4H-pyran-4-thione: evidence for a dark 1B1(nπ2*) state below 1A1(ππ*)
  - Validated
  - ()
  - 352
  - 3-4
  - 191
  - 201
  - The (3)A(2)(npi*) --> X(1)A(1) phosphorescence excitation spectrum of jet-cooled 4H-pyran-4-thione (PT) was investigated in the region of the (1)A(1) (pipi*) <-- X(1)A(1) absorption band between 27 300 and 28 800 cm(-1). The spectrum exhibits complex features, which are typical for the (strong) vibronic coupling case of two adjacent electronic states. The observed intermediate level structure was attributed to the coupling with a lower lying dark electronic state B-1(1) (npi(2)*), whose origin was estimated to be similar to825-1025 cm(-1) below the origin (1)A(1) (pipi*)(0), using calculations of vibronic state densities in combination with symmetry considerations. Consequences of the vibronic coupling on the decay dynamics of (1)A(1) (pipi*) as well as tentative assignments of vibronic transitions (1)A(1)(pipi*)(v), <-- X(1)A(1) are also briefly discussed. (C) 2002 Elsevier Science B.V. All rights reserved.The (3)A(2)(npi*) --> X(1)A(1) phosphorescence excitation spectrum of jet-cooled 4H-pyran-4-thione (PT) was investigated in the region of the (1)A(1) (pipi*) <-- X(1)A(1) absorption band between 27 300 and 28 800 cm(-1). The spectrum exhibits complex features, which are typical for the (strong) vibronic coupling case of two adjacent electronic states. The observed intermediate level structure was attributed to the coupling with a lower lying dark electronic state B-1(1) (npi(2)*), whose origin was estimated to be similar to825-1025 cm(-1) below the origin (1)A(1) (pipi*)(0), using calculations of vibronic state densities in combination with symmetry considerations. Consequences of the vibronic coupling on the decay dynamics of (1)A(1) (pipi*) as well as tentative assignments of vibronic transitions (1)A(1)(pipi*)(v), <-- X(1)A(1) are also briefly discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
  - 0009-26140009-2614
  - ://000173618000009 ://000173618000009
DA  - 2002/01
ER  - 

@article{V67924386,
   = {Ruth*,  A. A. and Doherty,  W. G. and Brint,  R. P. },
   = {2002},
   = {January},
   = {Chemical Physics Letters},
   = {The 1A1(ππ*)←X1A1 transition in jet-cooled 4H-pyran-4-thione: evidence for a dark 1B1(nπ2*) state below 1A1(ππ*)},
   = {Validated},
   = {()},
   = {352},
   = {3-4},
  pages = {191--201},
   = {{The (3)A(2)(npi*) --> X(1)A(1) phosphorescence excitation spectrum of jet-cooled 4H-pyran-4-thione (PT) was investigated in the region of the (1)A(1) (pipi*) <-- X(1)A(1) absorption band between 27 300 and 28 800 cm(-1). The spectrum exhibits complex features, which are typical for the (strong) vibronic coupling case of two adjacent electronic states. The observed intermediate level structure was attributed to the coupling with a lower lying dark electronic state B-1(1) (npi(2)*), whose origin was estimated to be similar to825-1025 cm(-1) below the origin (1)A(1) (pipi*)(0), using calculations of vibronic state densities in combination with symmetry considerations. Consequences of the vibronic coupling on the decay dynamics of (1)A(1) (pipi*) as well as tentative assignments of vibronic transitions (1)A(1)(pipi*)(v), <-- X(1)A(1) are also briefly discussed. (C) 2002 Elsevier Science B.V. All rights reserved.The (3)A(2)(npi*) --> X(1)A(1) phosphorescence excitation spectrum of jet-cooled 4H-pyran-4-thione (PT) was investigated in the region of the (1)A(1) (pipi*) <-- X(1)A(1) absorption band between 27 300 and 28 800 cm(-1). The spectrum exhibits complex features, which are typical for the (strong) vibronic coupling case of two adjacent electronic states. The observed intermediate level structure was attributed to the coupling with a lower lying dark electronic state B-1(1) (npi(2)*), whose origin was estimated to be similar to825-1025 cm(-1) below the origin (1)A(1) (pipi*)(0), using calculations of vibronic state densities in combination with symmetry considerations. Consequences of the vibronic coupling on the decay dynamics of (1)A(1) (pipi*) as well as tentative assignments of vibronic transitions (1)A(1)(pipi*)(v), <-- X(1)A(1) are also briefly discussed. (C) 2002 Elsevier Science B.V. All rights reserved.}},
  issn = {0009-26140009-2614},
   = {://000173618000009 ://000173618000009},
  source = {IRIS}
}