Pd complexes containing non-symmetrical diphosphines in the terpolymerization of ethene, propene and carbon monoxide

The preparation and the characterization of palladium(II) neutral dichloro complexes [PdCl2(P^P′)] 1a–d and cationic disolvento complexes [Pd(P^P′)(H2O)2](OTf)23a–d containing non-symmetrical Cs-symmetrical diphosphines are reported.Terpolymerization of ethene, propene and carbon monoxide was carried out with the catalyst precursors 3a–d. In the test of each catalyst precursor the ethene pressure was systematically increased, while the propene concentration and carbon monoxide pressure were kept constant. The produced terpolymers were characterized by means of 1H and 13C NMR spectroscopy. The catalytic activity of the systems tested is discussed. The structure of the produced terpolymers is analyzed via NMR spectroscopy.

Figure optionsDownload as PowerPoint slide