Novel transition metal phospha-alkyne complexes. X-Ray crystal and molecular structure of a side-bonded ButCP complex of zerovalent platinum, Pt(PPh3)2(ButCP)

Abstract

A single crystel X-ray diffraction study of the novel complex Pt(PPh₃)₂(Bu^tCP) indicates that the phospha-alkyne is co-ordinated in a side-on manner to platinum and its near-normal Pt–P bond length (2.320 Å) is discussed in relation to its exceptionally small platinum-phosphorus coupling constant ¹J(PtP)(62 Hz); Co₂(CO)₈ reacts with Bu^tCP to give the dinuclear complex Co₂(CO)₆(Bu^tCP).