Ligand influence on the Mössbauer isomer shift and the quadrupole splitting in some related iron complexes

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Abstract

A series of related iron complexes of the form FeL3X2 (L = phenantroline, 2,2′-bipyridyl, glyoxal-bis-N-methylimine and X = ClO4, I) has been studied by Mössbauer spectroscopy and the measured parameters have been compared with theoretical estimates. The results have been interpreted by a model based on the molecular orbital picture of the organometallic cation and a point charge correction, representing the field of the counter-ions.

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