Spectroscopy and photophysics of the {sup 1}{Delta}{sub u} {l_arrow} {sup 1}{Sigma}{sub g}{sup +} transition of jet-cooled C{sub 4}H{sub 2}, C{sub 4}HD, and C{sub 4}D{sub 2}
- Purdue Univ., West Lafayette, IN (United States)
Spectroscopy and photophysics of the {sup 1}{Delta}{sub u}{l_arrow}{sup 1}{Sigma}{sub g}{sup +} transition of jet-cooled C{sub 4}H{sub 2}, C{sub 4}HD, and C{sub 4}D{sub 2} reveal several vibronic transitions that can`t be completely analyzed due to the complexity of the upper state spectroscopy due to Renner-Teller and Herzberg-Teller coupling. The absence of 2{sup n}{sub 0} transitions are due to linear or quasi-linear upper state geometry. Decreasing widths of transitions occur when deuteration increases, indicating that H-atom motion plays an important role in the coupling. Suggestions are made in this paper for the dramatic observed differences in width from one vibronic level to the next. 24 refs., 10 figs., 2 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 457774
- Journal Information:
- Journal of Physical Chemistry, Vol. 96, Issue 13; Other Information: PBD: 25 Jun 1992
- Country of Publication:
- United States
- Language:
- English
Similar Records
Near-infrared electronic spectroscopy of the HCCI A{sup 1}A{double_prime} {l_arrow} X{sup 1}A{prime} transition
Quantum structural approach to high-T{sub c} superconductivity theory: Herzberg-Teller, Renner-Teller, Jahn-Teller effects and intervalent geminal charge transfer