Abstract

Un nouveau compose hybride (C 5 H 6 ClN 2 )[Cr(C 2 O 4 ) 2 (H 2 O) 2] .2H 2 O, prepare par evaporation lente a temperature ambiante, a fait l'objet d'une etude structurale par diffraction des rayons X sur monocristal. La cohesion de la structure est assuree par des liaisons hydrogene et des interactions π-π entre les cycles aromatiques du cation organique (C 5 H 6 ClN 2 ) + formant ainsi un reseau tridimensionnel. L'etude des proprietes thermiques montre que le compose est stable jusqu'a 134°C et les mesures de la susceptibilite magnetique en fonction de la temperature revelent des interactions antiferromagnetiques entre les ions Cr +III au dessous de 14K.

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