A NOVEL TYPE OF POLYCONDENSATION OF POLYHALOGENATED ORGANIC AROMATIC COMPOUNDS PRODUCING THERMOSTABLE POLYPHENYLENE TYPE POLYMERS PROMOTED BY NICKEL COMPLEXES

Abstract Nickel complexes (NiCl2 (2,2′-bipyridine) and NiBr2(triphenylphosphine)2) catalyze polycondensation of di- and polyhalogenated aromatic compounds including p-dibromobenzene, p-dichlorobenzene, m-dichlorobenzene, bis (4-bromophenyl)ether, p-chlorobenzyl chloride and 1,3,5-trichlorobenzene by dehalogenation with magnesium to give polyphenylene type polymers in high yields.