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Synthesis of Mixed-Valence Platinum Triangulo Clusters [Pt 3 (μ-PPh 2 ) 2 (μ-C 6 F 5 )(C 6 F 5 )(PPh 2 R) 2 ] (R = Ph, Me, Et). Crystal Structures of [Pt 3 (μ-PPh 2 ) 2 (μ-C 6 F 5 )(C 6 F 5 )(PPh 3 ) 2 ] and [Pt 3 (μ-AgOClO 3 )(μ-PPh 2 ) 2 (μ-C 6 F 5 )(C 6 F 5 )(…

2002; American Chemical Society; Volume: 21; Issue: 11 Linguagem: Inglês

10.1021/om020036v

1520-6041

Larry R. Falvello, J. Forniés, Consuelo Fortuño, Fernando Durán, Antonio Martı́n,

Magnetism in coordination complexes

The reaction between [(C6F5)2Pt(μ-PPh2)2Pt(PPh2R)2] and [Pt(C7H10)3] in toluene yields the triangulo complexes [Pt3(μ-PPh2)2(μ-C6F5)(C6F5)(PPh2R)2] (R = Ph 4, Me 5, Et 6), which contain two phosphido and one pentafluophenyl bridging ligands and two phosphines and one pentafluophenyl terminal ones. The triangulo metal core displays three Pt−Pt bonds, as expected for a 42 valence electron count cluster. The basicity of these metal cores is demonstrated through the reaction of one of the complexes (R = Ph) with AgClO4 or [Ag(OClO3)(PPh3)], which gives the corresponding adduct [Pt3(AgOClO3)(μ-PPh2)2(μ-C6F5)(C6F5)(PPh3)2] (7) or [Pt3Ag(μ-PPh2)2(μ-C6F5)(C6F5)(PPh3)3][ClO4] (8). The X-ray structures of 4 and 7 have been determined.