Cis→trans conversion of formic acid by dissipative tunneling in solid rare gases: Influence of environment on the tunneling rate | Zendy

Mika Pettersson | Zendy; Ermelinda Maçôas | Zendy; Leonid Khriachtchev | Zendy; Jan Lundell | Zendy; Rui Fausto | Zendy; Markku Räsänen | Zendy

Open Access

Cis→trans conversion of formic acid by dissipative tunneling in solid rare gases: Influence of environment on the tunneling rate

Author(s) -

Mika Pettersson,

Ermelinda Maçôas,

Leonid Khriachtchev,

Jan Lundell,

Rui Fausto,

Markku Räsänen

Publication year - 2002

Publication title -

the journal of chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.071

H-Index - 357

eISSN - 1089-7690

pISSN - 0021-9606

DOI - 10.1063/1.1521429

Subject(s) - quantum tunnelling , chemistry , relaxation (psychology) , conformational isomerism , reaction rate constant , atmospheric temperature range , dissipative system , molecule , condensed matter physics , atomic physics , chemical physics , physics , thermodynamics , kinetics , quantum mechanics , organic chemistry , psychology , social psychology

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 tunnelin

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