The first example of a d3–d3 dinuclear compound containing four-co-ordinate metal atoms sharing a pair of bridging ligands: [(ButO)2W(µ-PPh2)]2
Abstract
(p-Tolyl)(ButO)2WW(OBut)2(p-tolyl) and Ph2PH (2 equiv.) react in hydrocarbon solvents to give toluene (2 equiv.) and [(ButO)2W(µ-PPh2)]2 which in the solid state contains a puckered W2P2 moiety, W–W 2.59 Å; in solution the W2(µ-PPh2)2 moiety is undergoing rapid inversion on the n.m.r. time-scale.