The preparation and molecular structure of the first primary ferrocenylphosphine complex of tungsten(II), [WI 2(CO) 3(FcCH 2PH 2) 2] [Fc=Fe(η 5-C 5H 5)(η 5-C 5H 4)

Abstract

Reaction of [WI 2(CO) 3(NCMe) 2] with two equivalents of FcCH 2 PH 2 [ Fc= Fe( η 5 -C 5 H 5)( η 5 -C 5 H 4)] in CH 2Cl 2 at room temperature gave [WI 2(CO) 3(FcCH 2PH 2) 2] ( 1) in 94% yield which was crystallographically characterised. This is the first primary ferrocenylphosphine complex of tungsten(II) and has a distorted capped octahedral structure, with trans-phosphine ligands and a carbonyl group that caps a triangular face formed by two carbonyl and one phosphine ligand.