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

摘要

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.