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(n-Bu4N)[Fe(cbdt)2]: Synthesis, crystal structure and magnetic characterisation og a new FE-III bisdithiolene complex

Cerdeira, A. ; Simão, D. ; Santos, I. C. ; Machado, A. ; Waerenborgh, J. ; Henriques, R. T. ; Almeida, M.

Inorganica Chimica Acta Vol. 361, Nº 14-15, pp. 3836 - 3841, October, 2008.

ISSN (print): 0020-1693
ISSN (online):

Journal Impact Factor: 1,940 (in 2008)

Digital Object Identifier: 10.1016/j.ica.2008.02.068

Abstract
The synthesis of the dithiol precursor of the new ligand 4-cyanobenzene-1,2-dithiolate (cbdt) is described. The (n-Bu4N)[Fe(cbdt)(2)] complex, was prepared and characterised by X-ray diffraction, Mossbauer spectroscopy and magnetisation measurements. The crystal structure consists in cis [Fe(cbdt)(2)]- units dimerised in a trans fashion, with Fe in a square pyramidal coordination, the dimers being well isolated from each other by the cations. The magnetic susceptibility shows that the [Fe(cbdt)(2)] units have a S = 3/2 spin configuration.