Inter- and hetero-metallic assembly of palladium sulfide aggregates: Crystal and molecular structures of [InPd<inf>2</inf>Cl<inf>3</inf>(dppf) <inf>2</inf>(μ<inf>3</inf>-S)<inf>2</inf>] · 3CH<inf>2</inf>Cl <inf>2</inf> and [Ag<inf>2</inf>Pd<inf>2</inf>(NO<inf>3</inf>) <inf>2</inf>(dppf)<inf>2</inf>(μ<inf>3</inf>-S)<inf>2</inf>] · 2CH<inf>2</inf>Cl<inf>2</inf>

Abstract

Lewis acid/base addition between Pd2(dppf)2(μ-S) 2 and MXn [M = In(III), Ga(III), Tl(I), Pb(II), Sn(IV), Bi(III), Ag(I) and Au(I); X = halide or pseudohalide; dppf = 1,1′-bis(diphenylphosphino)ferrocene] gives rise to a range of neutral or cationic intermetallics aggregates with the {Pd2MS2} or {Pd2M2S2} core. Effectively Pd 2(dppf)2(μ-S)2 functions as a chelating or bridging dithio metalloligand. Two representative crystal structures, viz. [InPd2Cl3(dppf)2(μ3-S) 2] · 3CH2Cl2 and [Ag2Pd 2(NO3)2(dppf)2(μ3-S) 2] · 2CH2Cl2 are described and discussed. The former features an intermetallic {InPd2} triangle whereas the latter displays a heterometallic {Ag2Pd2} metal plane. Both of them are sustained and supported by capping sulfides without significant or direct metal-metal bonds. © 2004 Elsevier B.V. All rights reserved.