Synthesis and crystal structures of new palladium catalysts for the hydromethoxycarbonylation of alkenes

The preparation and structural characterization of dimeric Pd(I)–Pd(I) complex [Pd2{(PPh3)(OSO2CF3)}2].CH2Cl2 (1) and three palladium center [Pd3{(PPh3)(OSO2CF3)}2] (2) and [Pd3(PPh3)4](SO3CF3)2 (3) complexes are reported. The complexes exhibit coordination in which the phosphine phenyl ring is used to stabilize Pd(I) centers in (1) and, Pd(I) and Pd(0) centers in (2) and (3) by acting as π electron donors. The complexes were characterized by single crystal X-ray crystallography.

The synthesis and structural characterization of three palladium complexes is presented. The crystallographic insights into the structures are presented and are shown to be related to the catalytic activity of the complexes as catalysts for hydromethoxycarbonylation of alkenes.Figure optionsDownload as PowerPoint slideHighlights
► Palladium(0) and Palladium(I) phosphine complexes for hydromethoxycarbonylation of alkenes.
► Crystal structures of dimeric Palladium(0) phosphine complex.
► Crystal structure of three Pd center phosphine complexes - Pd(I)–Pd(0)–Pd(I).