Synthesis and Structure of Formally Hexavalent Palladium Complexes

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Science  11 Jan 2002:
Vol. 295, Issue 5553, pp. 308-310
DOI: 10.1126/science.1067027

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Formally hexavalent palladium complexes have been isolated and structurally characterized for the first time. Thermal condensation reaction of three molecules of 1,2-C6H4(SiH2)2PdII(R2PCH2CH2PR2) (where R is defined as a methyl or ethyl) provided trinuclear palladium complexes. Single-crystal x-ray analysis revealed that each of the central palladium atoms of the complexes is ligated by six silicon atoms and is hexavalent, whereas the other palladium atoms are divalent.

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