Dynamic Solvent Effects in the Degenerate Isomerization of a Hexafluoroacetone Anil Studied by High-Pressure 19 F NMR

Author:

Ohga Yasushi1,Asano Tsutomu1,Karger Norbert2,Gross Thomas2,Lüdemann Hans-Dietrich2

Affiliation:

1. 1Department of Applied Chemistry, Faculty of Engineering, Oita University, Oita 870-1192, Japan

2. 2Institut für Biophysik und physikalische Biochemie, Universität Regensburg, 93040 Regensburg

Abstract

Abstract The rate of the degenerate isomerization of N-hexafluoroisopropylidene-N’,N’-dimethyl-ρ-phe-nylenediamine was measured by high-pressure 19F NMR spectroscopy in a viscous hydrocar-bon, 2,4-dicyclohexyl-2-methylpentane. Pressure-induced retardations that cannot be rationalized within the framework of the transition state theory (TST) were observed, and it was concluded that the reaction was cast into the TST-invalid nonequilibrium conditions by high pressure.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Solvent effect on the volume of activation and volume of the Diels-Alder reaction;Journal of Physical Organic Chemistry;2001-09

2. Comment on “Phantom Activation Volumes”;The Journal of Physical Chemistry A;2001-03-02

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