Vibrational dephasing of axial and equatorial conformers in cyclohexyl bromide

H. ABRAMCZYK; M. BARUT; A. BEN ALTABEF; R. ESCRIBANO

CHEMICAL PHYSICS

ELSEVIER SCIENCE BV

Año: 1994 vol. 181 p. 393 - 399

0301-0104

The Raman and IR spectra of the C-Br stretching mode in the axial and the equatorial positions of cyclohexyl bromide have been measured at room temperature. The mechanism and the differences in the rate of vibrational dephasing of the axial and the equatorial conformers are discussed. It is found that intermolecular long range transition dipole-transition dipole coupling gives the main contribution to the differences in vibrational dephasing rate of both conformers.