Luminescent homo- and heteropolynuclear platinum(II) chalcogenido aggregates basedcx on [Pt2E2(P boolean AND N)(4)] units (E = S, Se)

摘要

A series of homodinuclear platinum(n) complexes containing bridging chalcogenido ligands, [Pt-2(muE)(2)(P<^>N)(4)] (P<^>N = dppy, E = S (1), Se (2); P<^>N tBu-dppy, E=S (3)) (dppy = 2-(diphenylphosphino)pyridine, tBu-dppy = 4-tert-butyl-2-(diphenylphosphino)pyridine) have been synthesized and characterized. The nucleophilicity of the {Pt2E2} unit towards a number of d(10) metal ions and complexes has been demonstrated through the successful isolation of a number of novel heteropolynuclear platinum (II)-copper(i), -silver(I), and -gold(I) complexes: [{Pt-2(mu(3)- E)(2)(dppy)(4)}(2)Ag-3](PF6)(3) (E = S (4); Se (5)) and [Pt-2(dppy)(4)(mu(3)-E)(2)M-2(dppm)]-X-2 (E = S, M = Ag, X = BF4 (6); E = S, M = Cu, X = PF6 (7); E = S, M = Au, X = PF6 (8); E = Se, M = Ag, X = PF6 (9); E = Se, M = An, X = PF6 (10)). Some of them display short metal... metal contacts. These complexes have been found to possess interesting luminescence properties. Through systematic comparison studies, the emission origin has been probed. [References: 52]