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Molecular Physics
An International Journal at the Interface Between Chemistry and Physics
Volume 30, 1975 - Issue 3
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Original Articles

On the mechanism of spin exchange in long-chain nitroxide biradicals

V.N. Parmon Institute of Chemical Physics, Academy of Sciences of the U.S.S.R., Moscow, B-334
,
A.I. Kokorin Institute of Chemical Physics, Academy of Sciences of the U.S.S.R., Moscow, B-334
,
G.M. Zhidomirov Institute of Chemical Physics, Academy of Sciences of the U.S.S.R., Moscow, B-334
&
K.I. Zamaraev Institute of Chemical Physics, Academy of Sciences of the U.S.S.R., Moscow, B-334
Pages 695-701 | Received 24 Oct 1974, Published online: 23 Aug 2006
 
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Abstract

It is shown that the E.S.R. spectra of long-chain nitroxide biradicals represent the superposition of the spectrum of the non-reacting radical moieties in the elongated conformation and of that of the cage where the radical moieties are close together and can interact with each other. Inside the cage a fast intramolecular motion is observed. Some thermodynamic parameters of the cage as well as thermodynamic parameters of the motion inside the cage are calculated from the experimental E.S.R. spectra of four biradicals.

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