Journal of the American Chemical Society, Vol.128, No.30, 9632-9633, 2006
Acyclic catena-diphosphinodiphosphonium dications [(R)3P-PR'-PR'-PR3](2+) or bisphosphine-diphosphenium complexes [R3P -> PR'-PR'<-PR3](2+): Synthesis by reductive P-P coupling of [R3P-PR' Cl](+) and phosphine ligand exchange