DIVALENT METAL CHLORIDE FORMAMIDINE COMPLEXES, M(II)=FE, CO AND PT - SYNTHESES AND STRUCTURAL CHARACTERIZATION

The reactions of anhydrous FeCl2, CoC12 and K2PtCl4 with N,N'-di(p-tolyl)formamidine (HDTolF) yield crystalline materials which are soluble in common organic solvents. FeCl2(HDTolF)2 (1) and CoCl2(HDTolF)2 (II) have a pseudo-tetrahedral coordination about the metal centre, while [PtCl(HDTolF)3]Cl (III) has a square-planar arrangement of atoms around the platinum atom. The latter reacts with butyllithium to produce PtCl(DTolF) (HDTolF)2 (IV). All compounds reported have been characterized by X-ray crystallography and by various spectroscopic techniques. The facility with which they form and the high purity in which they are isolated, as well as their favourable solubility characteristics, make them attractive starting materials for the preparation of other formamidinato complexes.