MAGNETIC INVESTIGATIONS ON A VALENCE-DELOCALIZED DINUCLEAR FE (II)-FE(III) COMPLEX

Authors
MOHANTA S NAG K DUTTA SK WERNER R HAASE W DUIN E JOHNSON MK
Citation
S. Mohanta et al., MAGNETIC INVESTIGATIONS ON A VALENCE-DELOCALIZED DINUCLEAR FE (II)-FE(III) COMPLEX, Berichte der Bunsengesellschaft fur Physikalische Chemie, 100(12), 1996, pp. 2086-2090
Citations number
13
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
100
Issue
12
Year of publication
1996
Pages
2086 - 2090
Database
ISI
SICI code
0005-9021(1996)100:12<2086:MIOAVD>2.0.ZU;2-G
Abstract
The magnetic properties of a valence delocalized mixed valent Fe(II)-F e(III) complex have been investigated. On the basis of magnetic suscep tibility measurements and NIR absorption spectroscopy the double excha nge parameter was determined to B = 940 cm(-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 v ibronic interaction. For the vibronic-interaction parameter lambda onl y an upper bound of 2500 cm(-1) could be given.