Synthesis and characterization of five-coordinate olefin complexes of palladium(II). Molecular structure of the acetone solvate of (2,9-dimethyl-1,10-phenanthroline)(maleic anhydride)methylchloropalladium

Five-coordinate olefin complexes of palladium(II) of general formula PdClMe(N-N')(η 2 -olefin) have been prepared by reaction of the dimeric complex [PdClMe(Me 2 S)] 2 with planar sterically crowded nitrogenous bidentate ligands and the appropriate olefin. The X-ray crystal structure of the complex having N-N'=2,9-dimethyl-1,10-phenanthroline and olefin=maleic anhydride has been determined