ENHANCED INSTABILITY OF EXTREME MOTION STATES IN PROPYNE - LIFETIMES OF OVERTONE VERSUS ISOENERGETIC COMBINATION STATES

被引：42

作者：

GAMBOGI, JE

TIMMERMANS, JH

LEHMANN, KK

SCOLES, G

机构：

[1] Department of Chemistry, Princeton University, Princeton

来源：

JOURNAL OF CHEMICAL PHYSICS | 1993年 / 99卷 / 11期

关键词：

D O I：

10.1063/1.465549

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In contrast to the theoretical and experimental evidence for small polyatomic molecules, we demonstrate that in the low overtone region of propyne (nu(CH) = 2-4) pure overtone states are more perturbed by intramolecular vibrational energy redistribution (IVR) than some nearly isoenergetic combination states. We argue that for larger molecules, this is the expected behavior when the combination states have their energy delocalized over modes that interact only weakly by direct low order anharmonic resonances.

引用

页码：9314 / 9317

页数：4