Structural and spectroscopic characterization of tetranuclear iron complexes containing P R2 N Ph2 a bridge

Abstract

A pair of tetranuclear iron complexes consisting of two Fe 2(Cl 2bdt)(CO) 5 subunits (Cl 2bdt=3,6- dicholorobenzene-1,2-dithiolate) bridged by different cyclic 1,5-diaza-3,7-diphosphacyclooctane (P 2N 2) ligands were prepared and structurally characterized. In the solid state, the P2N2 ligands adopt a boat conformation, which results in rather short distances between the two Fe 2(Cl 2bdt)(CO) 5 clusters that promotes electronic communication across the diphosphine ligand. © 2012 Taylor & Francis.