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Title

Binuclear pentafluorophenyl complexes containing halide and/or bis(diphenylphosphino)methane (dppm) as bridging ligands. Molecular structure of [N(PPh3)2][Pt2(µ-I)(µ-dppm)(C6F5)4]·2CHCL3

AuthorsCasas, José M. ; Falvello, Larry R.; Forniés, Juan ; Martín, Antonio ; Tomás, Milagros
Issue Date1993
PublisherRoyal Society of Chemistry (UK)
CitationDalton Transactions 7: 1107-1111 (1993)
AbstractThe reaction of [N(PPh3)2]2[Pt2(μ-X) 2(C6F5)4] (X = Cl, Br or I) with bis(diphenylphosphino)methane (dppm) at room temperature in CH2Cl2 affords [N(PPh3)2]2[(C6F5) 2XPt(μ-dppm)PtX(C6F5)2] (X = Cl 1, Br 2 or I 3) in good yield as the kinetic products. Further reactions between 1-3 and AgClO4 (molar ratio 1:1) in acetone-tetrahydrofuran render the corresponding derivatives [N(PPh3)2][(C6F5) 2Pt(μ-X)(μ-ddppm)Pt(C6F5)2] [X = Cl, Br or I) and AgX. These complexes are very stable, and the bridging system is not cleaved by anionic (X-) or neutral ligands (NCMe, tetrahydrothiophene, SPPh3, PPh3). The structure of [N(PPh3)2][Pt2(μ-I)(μ-dppm)(C 6F5)4]·2CHCl3 has been determined by a single-crystal X-ray diffraction study, showing strain in the bridging (μ-X)(μ-dppm) system. Crystals are triclinic, space group P1, with a = 11.609(2), b = 19.113(2), c = 19.997(2) Å, α = 101.83(1), β = 93.32(1), γ = 92.61(1)°, Z = 2; 8052 data with I > 3σ(I) refined to R = 0.051, R′ = 0.068.
URIhttp://hdl.handle.net/10261/64349
DOI10.1039/DT9930001107
Identifiersdoi: 10.1039/DT9930001107
issn: 1472-7773
e-issn: 1477-9234
Appears in Collections:(ICMA) Artículos
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