Intramolecular vibrational energy redistribution and the gas phase overtone spectra of selectively deuterated neopentanes
摘要:
The gas phase overtone spectra of neopentane-d6 [(CH3)2C(CD3)2] and neopentane-d9 [(CH3)C(CD3)3] are measured in the regions of ΔvCH =2–5. The peak positions are analyzed in terms of the local mode model with the assumption of methyl group independence. The overtone linewidths are shown to be consistent with intramolecular vibrational decay of the overtone states. The coupling scheme for the vibrational decay is similar to that applied to the linewidth data of benzene by Sibert, Reinhardt, and Hynes.