ChemInform Abstract: A New 1,3-Diphosphaallylnickel Complex for the Polymerization of Ethene.

ChemInform Abstract

The new Ni complex (III) exists in solution as a η3-coordinated diphosphaallyl compound (1H and ¹³C NMR evidence). A crystal structure analysis of (III) (space group P1) indicates the existence of a η1,η2-coordination of the diphosphapropene ligand in the solid state. (III), as well as the product generated in situ from (I) and (II), catalyze the polymerization of ethene (70-100 °C, 30 bar) to give linear polyethylene containing predominantly terminal double bonds. With propene no catalysis can be observed.