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DOI: 10.1039/A703427J (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 3305-3310

Synthesis and structural characterisation of tetranuclear palladium–cobalt clusters

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Ramón Vilar, Simon E. Lawrence, Stephan Menzer, D. Michael P. Mingos and David J. Williams

Abstract

The reactions between the palladium compounds [Pd4(µ3-CH)(µ-Cl)3(PBut 3)4] or [Pd2(µ-X)2(PBut3)2 ] (X = Br or I) and [Co2(CO)8] have led to the novel palladium–cobalt tetranuclear compounds [CoPd3(µ3-X)(µ-CO)3(µ3 -CO)(CO)(PBut3)3] (X = Cl, Br or I). Structural characterisation of one of them (X = Cl) has shown that the metal cluster geometry is intermediate between a tetrahedron and a butterfly. A second product detected in this reaction {and additionally with [Fe2(CO)9] and [Pd2(µ-Br)2(PBut3) 2]} is also reported and has been structurally characterised as [Pd6(µ-Br)4(µ-CO)4(PBut 3)4] (when X = Br). This hexanuclear cluster has triangular cluster moieties linked by double bromide bridges.

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