✦ LIBER ✦

Methyl torsional barriers in the S0, T1, and S1 electronic states of 2-methylpyrazine

✍ Scribed by J.L. Tomer; S. Yamauchi; D.W. Pratt

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 537 KB
Volume: 175
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(90)85513-c

No coin nor oath required. For personal study only.

✦ Synopsis

The laser-induced fluorescence and phosphorescence excitation spectra of 2-methylpyrazine are reported. Vibrational and methyl torsional assignments have been made. Methyl torsional parameters for the So, T, and S, electronic states have been determined from these data and are discussed in terms of the local electronic distributions in each state.

📜 SIMILAR VOLUMES

The S0 and S1 methyl group torsional bar

The S0 and S1 methyl group torsional barriers in 2-methyl-1-naphthol depend upon the orientation of the OH group

✍ Xue-Qing Tan; David W. Pratt 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 270 KB

The two OH rotamers of 2-methyl-1-naphthol, syn-2M 1 HN and anti-2M 1 J-IN, have different CH, torsional barriers in both their ground and first excited electronic states, as revealed by high-resolution laser studies of their S,+S, fluorescence excitation spectra in a molecular beam. A comparison of

cis Acrolein: Mixing of the S0 and S1 el

cis Acrolein: Mixing of the S0 and S1 electronic states by the (a″) skeletal torsional vibration

✍ K.K. Innes 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 353 KB

CF3-torsional potentials of 2-aminobenzo

CF3-torsional potentials of 2-aminobenzotrifluoride in the S0 and S1 electronic states from fluorescence spectra in a supersonic jet

✍ Robert D. Gordon; J. Michael Hollas; Paulo J.A. Ribeiro-Claro; José J.C. Teixeir 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 436 KB

Both fluorescence excitation and dispersed fluorescence spectra of 2-aminobenzotrifluoride in a supersonic jet show quite extensive vibrational structure due to the CF,-torsional motion in the S, and So electronic states, respectively. This structure has been assigned and results in CF,-torsional po

Raman spectroscopic study of bis(4-biphe

Raman spectroscopic study of bis(4-biphenylyl)acetylene in the S0, S1 and T1 states

✍ Toshio Kamisuki; Munetaka Akita; Yoshihiko Moro-oka; Chiaki Hirose 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 347 KB

The coherent Raman (CARS and CSRS) spectra for the excited and states of bis(4-biphenylyl)acetylene (S 1 T 1 ) (BBA) and also the spontaneous Raman spectrum for the ground state were observed. The assignments of (S 0 ) vibrational bands were made tentatively by comparison with reported results for r

Evidence for S1/S2 electronic state mixi

Evidence for S1/S2 electronic state mixing in the S1 ←l S0 fluorescence excitation spectrum of 1-naphthol

✍ Susan J. Humphrey; David W. Pratt 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 413 KB

Rotationatly resolved fluorescence excitation spectra of two vibronic bands at AE= 410.5 and 414.9 cm -l in the S l ~ S O electronic transition of trans-l-naphthol have been recorded and analyzed. The analysis reveals that the in-plane transition dipole moment of the 410 cm-1 band makes an angle of

Effect of aggregation on the radiative (

Effect of aggregation on the radiative (T1 → S0) and nonradiative (T1⇝S0 and S1⇝T1) transitions in xanthene dyes

✍ N.B. Joshi; D.D. Pant 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 298 KB