Über Komplexe des Typs {(PhC=C)3P}3M(CO)3 (M = Cr, Mo, W) / On Complexes of the Type {(PhC=C)3P}3M(CO)3 (M = Cr, Mo, W)

Abstract

Abstract The tris(alkinyl)phosphine complexes {(PhC=C)3P}3M(CO)3, M = Cr (3a), Mo (3b), W (3c), are obtained from P(C=CPh)3 and (C6H15N3)M(CO)3 (C6H15N3 = 1,3,5-trimethyl-1,3,5-triazacyclohexane) as stable yellow solids in good yields. While IR data indicate significant acceptor properties of the phosphane ligands, the X-ray structure analysis of 3c also allows the discussion of weak donor interactions.