title: Assembly of symmetrical and unsymmetrical platinum(II) rollover complexes with bidentate phosphine ligands.
abstract: The reaction of the cyclometalated rollover complex [Pt(bpy-H)(Me)(DMSO)] (bpy-H = cyclometalated 2,2'-bipyridine) with two diphosphines, dppm (1,1-bis(diphenylphosphino)methane) and dppe (1,2-bis(diphenylphosphino)ethane), was investigated. According to the reaction conditions, dppm behaves as a monodentate, bridging or chelated ligand, whereas dppe gave only chelated species. Some aspects of the reactivity of the isolated species were studied, including protonation with [H3O·18-crown-6][BF4] and coordination reactions of mononuclear complexes, obtaining, inter alia, rare examples of unsymmetrical organometallic species with bridging dppm.
authors.affiliation: Dipartimento di Chimica e Farmacia, Università degli Studi di Sassari, via Vienna 2, 07100 Sassari, Italy. zucca@uniss.it.
authors.forename: Luca
authors.initials: L
authors.lastname: Maidich
authors.forename: Giuseppina
authors.initials: G
authors.lastname: Zuri
authors.forename: Sergio
authors.initials: S
authors.lastname: Stoccoro
authors.forename: Maria Agostina
authors.initials: MA
authors.lastname: Cinellu
authors.forename: Antonio
authors.initials: A
authors.lastname: Zucca
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D015394:Molecular Structure; D010720:Phosphines / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D010720:Phosphines; D010984:Platinum; C044646:phosphine