title: Halogenation of (phosphine chalcogenide)gold(I) halides; some unexpected products.
abstract: The monoselenide of 1,8-bis(diphenylphosphino)naphthalene reacts with (tht)AuCl to give the gold(III) system [(dppnAuSe)(2)](2+) 2Cl(-) (1); bromination of the bromogold(I) complex of the 1,2-bis(diphenylphosphino)methane monosulfide ligand furnishes the tribromide salt (2a) of a gold(III) cation [LAuBr(2)](+); bromination of the bromogold(I) complex of the 1,2-bis(diphenylphosphino)benzene monosulfide ligand leads to a mixed bromide/tetrabromoaurate salt (3) of a heterocyclic dication involving a [-PPh(2)-S-PPh(2)-](2+) moiety; analogous reactions of triphenylphosphine sulfide and selenide complexes lead to tetrabromoaurate salts (4a and 4b) of the (bromochalcogeno)phosphonium cations Ph(3)PEBr(+).
authors: Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Braunschweig, Germany.
authors: Christina
authors: C
authors: Taouss
authors: Peter G
authors: PG
authors: Jones