Environment effects on the ESR spectrum of the cation radical of dimethylketene in low temperature matrices.

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概要

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• The cation radical of dimethylketene produced in γ-irradiated solid solutions of various halocarbons has been investigated by ESR over a temperature range from 77 K to the melting point of each matrix. The cation radical in CCl<SUB>4</SUB> was stable up to about 180 K and the spectrum was well resolved to allow the determinations of the anisotropic ESR parameters. In CCl<SUB>2</SUB>FCClF<SUB>2</SUB> and CCl<SUB>2</SUB>FCCl<SUB>2</SUB>F, a series of irreversible spectral changes was observed with an increase in temperature. This process was interpreted in terms of the formation of the dimer cation. In the matrix of CCl<SUB>3</SUB>F, the ESR spectrum exhibited extra structure, which varied reversibly with temperature. The analyses of the spectra suggested that the cation radical in CCl<SUB>3</SUB>F weakly interacts with surrounding matrix molecules to form adducts.

• 公益社団法人 日本化学会の論文

著者

• Shida Tadamasa

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

• Sato Shin

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

• Fujisawa Jun

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

• Shimokoshi Kazuo

  Department of Chemistry, Tokyo Institute of Technology

• Shimokoshi Kazuo

  Department of Applied Physics, Tokyo Institute of Technology

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