Vibrational dephasing of the SiH stretching mode in liquid trichlorosilane

Abstract

The Raman signal from the v1 mode of trichlorosilane has been examined by dilution in several solvents. Temperature studies were also conducted and include data from the disordered solid phase of the neat sample. The results of these studies show that (a) the v1 fundamental is involved in a dephasing process controlled by the intramolecular potential function; (b) the neat liquid has a longer dephasing time than in any of the solvents, indicating memory retention as an intermolecular process. Additionally, environmental effects (broadening) are pronounced and appear to be related to the dipole moment of the solvent. The theoretical model proposed by Rothschild' is used to strengthen the interpretive case offered for the dephasing mechanistic process of the fundamental.

Raman study of vibrational relaxation of 1-alcynes in solutionv(≡CH) andv(C≡C) modes of 1-hexyne and 1-decyne

“…rather heavy molecules, should be preferred. A few studies in this line have already been realized by spontaneous Raman spectroscopy [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. They nearly always bear on pure liquids.…”