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Magnetic investigations on a valence‐delocalized dinuclear Fe(II)‐Fe(III) complex
Author(s) -
Saal C,
Mohanta S.,
Nag K.,
Dutta S. K.,
Werner R.,
Haase W.,
Duin E.,
Johnson M. K.
Publication year - 1996
Publication title -
berichte der bunsengesellschaft für physikalische chemie
Language(s) - English
Resource type - Journals
ISSN - 0005-9021
DOI - 10.1002/bbpc.19961001228
Subject(s) - delocalized electron , antiferromagnetism , valence (chemistry) , exchange interaction , chemistry , isotropy , condensed matter physics , spectroscopy , absorption spectroscopy , magnetic susceptibility , materials science , atomic physics , molecular physics , crystallography , physics , ferromagnetism , quantum mechanics , organic chemistry
The magnetic properties of a valence delocalized mixed valent Fe(II)‐Fe(III) complex have been investigated. On the basis of magnetic susceptibility measurements and NIR absorption spectroscopy the double exchange parameter was determined to B = 940cm −1 while for the isotropic exchange interaction an antiferromagnetic contribution of, J = −100 cm −1 was obtained. The results were further discussed with regard to vibronic interaction. For the vibronic‐interaction parameter A only an upper bound of 2500 cm −1 could be given.

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