The 2 1A1 state of cis-hexatriene vapor: Resonance Raman spectra
โ Scribed by Curtis Westerfield; Anne B. Myers
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 545 KB
- Volume
- 202
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
Raman spectra have been obtained on resonance with the 2 'A, state of room temperature cis-1,3,5-hexatriene vapor at 290.8 nm. Overtones and combination bands of totally symmetric stretching and bending modes, both alone and in combination with an interval probably assignable as the overtone of the lowest frequency skeletal bending mode of b, symmetry, are strongly enhanced. Vibrational intervals tentatively assigned to the a2 and b2 methylene torsions are also observed, consistent with a large change in the force constant for =CH2 twisting in the 2 'A, state.
๐ SIMILAR VOLUMES
Resonance Raman spectra of butadtene obtained with radiatmn ~1 the 230-218 nm range exhibit activity in combmations and overtones oli a mode of b, symmetry. The pattern of the observed bands must be due to vlbronic activity of thts mode in a state of Ag symmetry-WC conclude that the 2 'AE state of b
Transient resonance Raman spectra of transstilbene in n-hexane have been obtained using two pulsed lasers at 266 and 585 nm. The former was used to pump the molecule to the fust excited singlet state (Sr) and the latter to proble spontaneous Raman scattering in resonance with the S, + Sr electronic
Pump/probe time-resolved resonance Raman experiments were carried out for free-base octaetbylporphyrin in benzene at room temperature by using two Nd: YAG lasers, and the vibrational spectra of its lowest excited singlet and triplet states were observed. The spectrum of the S, state of OEPHz pumped