Abstract

Mössbauer parameters have been determined, at 80 K, for some new complexes of the type [FeX(CNR) 5-nL n]ClO 4( n  3, 2, 0; X  Br -, I -; L  PhP(OEt) 2; R  4-CH 3C 6H 4, 2-CH 3C 6H 4, C 6H 5, 4-NO 2C 6H 4, 4-CH 3OC 6H 4, 2,6-(CH 3) 2C 6H 3 and [FeX 2(4-CH 3C 6H 4NC) 4]. Treatment by the point-charge model has been carried out to rationalize quadrupole splitting and centre shift values for chloro, bromo and iodo derivatives. The structural assignments, by pqs parameters, are consistent with X-ray and IR data.

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