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Molecular Physics
An International Journal at the Interface Between Chemistry and Physics
Volume 27, 1974 - Issue 2
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Original Articles

Calculation of the E.S.R. spectrum shape of the dynamic biradical system

V.N. Parmon N. D. Zelinsky Institute of Organic Chemistry, Academy of Sciences U.S.S.R., Leninsky Prospect 47, Moscow, B-334, U.S.S.R.
&
G.M. Zhidomirov N. D. Zelinsky Institute of Organic Chemistry, Academy of Sciences U.S.S.R., Leninsky Prospect 47, Moscow, B-334, U.S.S.R.
Pages 367-375 | Received 24 Jul 1972, Published online: 22 Aug 2006
 
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Abstract

The E.S.R. spectrum shape of a dynamic biradical system is calculated by means of the density spin-matrix formalism. The biradical is treated as a system which has two conformations characterized by the different values of the exchange integrals J=J 1 and J=J 2 and the lifetimes τ1 and τ2 respectively. The influence of both the rate and the strength of exchange interactions on the shape of the spectrum is discussed. Criteria to distinguish the spectra of the cases of both slow and fast exchange are discussed.

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