FIRST COORDINATION SPHERE AND SPIN-STATE IN SPIN CROSS-OVER IRON AND COBALT COMPLEXES | Zendy

C. Cartier | Zendy; P. Thuéry | Zendy; M. Verdaguer | Zendy; Jacqueline Zarembowitch | Zendy; A. Michalowicz | Zendy

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FIRST COORDINATION SPHERE AND SPIN-STATE IN SPIN CROSS-OVER IRON AND COBALT COMPLEXES

Author(s) -

C. Cartier,

P. Thuéry,

M. Verdaguer,

Jacqueline Zarembowitch,

A. Michalowicz

Publication year - 1986

Publication title -

le journal de physique colloques

Language(s) - English

Resource type - Journals

eISSN - 2777-3418

pISSN - 0449-1947

DOI - 10.1051/jphyscol:19868105

Subject(s) - cobalt , spin (aerodynamics) , coordination sphere , spin states , state (computer science) , condensed matter physics , materials science , physics , crystallography , chemistry , metallurgy , computer science , thermodynamics , crystal structure , algorithm

We study by X-Ray absorption spectroscopy the spin crossover for Co(II), Fe(II) and Fe(III) complexes. EXAFS allows to measure the first coordination sphere contraction through the thermally induced high-spin → low-spin transition for all the complexes. The XANES of the iron spectra is modified with the changes in the electronic structure during the transition. The modification of the short range order is compared to the results of other techniques to discuss the cooperative character of the phenomenon

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