期刊
JOURNAL OF CHEMICAL PHYSICS
卷 117, 期 20, 页码 9095-9098出版社
AIP Publishing
DOI: 10.1063/1.1521429
关键词
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The relaxation of the higher-energy cis conformer of formic acid to the lower-energy trans form by a tunneling mechanism has been investigated in low-temperature rare gas matrices. In the temperature range 8-60 K, the tunneling takes place dominantly from the vibrational ground state of the cis form and the temperature dependence of the tunneling rate constant is influenced by the interactions with the environment. The temperature-dependent tunneling rates for HCOOH and DCOOH in solid Ar, Kr, and Xe are measured including data for molecules in different local environments within each host. It was found that the medium and the local environment has a significant influence on the tunneling rate. (C) 2002 American Institute of Physics.
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