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Experimental and theoretical study of electro-optics of molecular dimers OC...HF and HCN...HF
Author(s): Michael O. Bulanin; V. P. Bulychev; K. G. Tokhadze; A. I. Uspensky
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Paper Abstract

We report an experimental study of the band shapes and relative IR intensities for the stretching v1 and librational vL modes of the HF subunit in complexes with OC and HCN. The ratio of the transition dipole moments for the v1 and vL bands is found to be close to unity. The relative intensities of the stretching and librational modes in typical H-bonded species (CH3)2CO. . .HF and (CH3)2O. . .HF are also measured for comparison. A multidimensional quantum mechanical problem of the relative motion of monomers in complexes is solved using model intermolecular interaction potentials and the wave functions expanded in products of 1D-basis functions. Classification of the states of relative motions of monomers is made by considering various cuts through the wave functions. Motions involving different degrees of freedom are shown to be strongly coupled. The frequencies and transition probabilities of the low-frequency modes are computed. The vibrationally averaged electro-optic parameters of complexes evaluated in the framework of the electrostatic induction model are in satisfactory agreement with the experimental data.

Paper Details

Date Published: 3 March 1997
PDF: 4 pages
Proc. SPIE 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy, (3 March 1997); doi: 10.1117/12.267778
Show Author Affiliations
Michael O. Bulanin, St. Petersburg State Univ. (Russia)
V. P. Bulychev, St. Petersburg State Univ. (Russia)
K. G. Tokhadze, St. Petersburg State Univ. (Russia)
A. I. Uspensky, St. Petersburg State Univ. (Russia)

Published in SPIE Proceedings Vol. 3090:
12th Symposium and School on High-Resolution Molecular Spectroscopy
Leonid N. Sinitsa; Yurii N. Ponomarev; Valery I. Perevalov, Editor(s)

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