Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
A Study on Electron Spin Resonance of the Complex between Metal Ions of Group II and o-Quinone Anion
Keiji KuwataYasuhiro Shimizu
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1969 Volume 42 Issue 4 Pages 864-870


An electron spin resonance study on the complex formation between o-quinone anion and metal ions of group II was undertaken, and the change in g-factor and proton hyperfine splittings of o-quinone anion by the complex formation were examined in detail. The change in g-factor was closely related to both the change in the unpaired electron distribution and the change in energy difference between lone pair orbital of oxygen and unpaired electron orbital. The stabilization of the quinone anion against its coupling reaction was seemed to be related to the shift in g-factor by complex formation. The interaction between quinone anion and metal ions was deduced to be partly ionic. An open shell SCF calculation with CI for the free quinone anion was carried out in order to discuss the electronic spectra of the complex.

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