Detail of "7291-22-7"

Reference

Evidence for resonant intermolecular coupling in liquid benzene and pyridine from Raman difference spectroscopy of isotopic mixtures

Evidence for resonant intermolecular coupling in liquid benzene and pyridine from Raman difference spectroscopy of isotopic mixtures. Meinander, N.; Strube, M. M.; Johnson, A. N.; Laane, J. (Dep. Chem., Texas A and M Univ., College Station, TX 77843, USA). J. Chem. Phys., 86(9), 4762-7 (English) 1987. CODEN: JCPSA6. ISSN: 0021-9606. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Section cross-reference(s): 22 Raman difference spectroscopy affords a powerful tool for measuring very small frequency differences between similar samples. This technique was used to measure the changes upon isotropic diln. in band frequencies and bandwidths for a no. of vibrations of liq. benzene and liq. pyridine. Both blue and red shifts of the vibrational frequencies were obsd., and these were interpreted in terms of additive resonant intermol. coupling and vol. effects. Both effects may provide either pos.There are some commonly used reagents with their cas registry numbers 71-43-2 and 7291-22-7 in this article. or neg. contributions to the frequency shifts. The frequency shifts obsd. in mixts. contg. both benzene and pyridine were interpreted in terms of resonance and vol. effects. .

Vibronic coupling of pyridine in the n

Vibronic coupling of pyridine in the n.pi.* excited state. Mochizuki, Yoko; Kaya, Koji; Ito, Mitsuo (Fac. Sci., Tohoku Univ., Sendai, Japan). J. Chem. Phys., 65(10), 4163-9 (English) 1976. CODEN: JCPSA6. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The electronic absorption spectra and Raman spectra of pyridine-d5 were measured. The vibrational anal. of the n.pi. 7291-22-7 and 16969-45-2 are also in the experiment.* absorption spectrum and the preresonance Raman effect showed that the CH out-of-plane bending vibration (of the ground and excited-state frequencies 886 and 331 cm-1 for pyridine) is responsible for the vibronic coupling between the lowest n.pi.* state and the 2nd lowest .pi..pi.* state. .