High yield synthesis of Ru–Pt mixed-metal cluster compounds
- 23 October 2001
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 22,p. 3295-3302
- https://doi.org/10.1039/b105844b
Abstract
The reaction of [PPN]2[Ru5C(CO)14] 1 or [PPN]2[Ru6C(CO)16] 2 [PPN+ = (PPh3)2N+] with Pt(II) compounds of general formula [PtX2Cl2] [X2 = (COD), (PPh3)2 and (PPh3)(CO)] (COD = 1,5-cyclooctadiene) have been investigated and the products of simple or double addition, viz. [Ru5PtC(CO)14(COD)] 3, [Ru5PtC(CO)14(PPh3)2] 4, [Ru5PtC(CO)15(PPh3)] 5, [Ru5Pt2C(CO)15(PPh3)2] 6, [Ru6PtC(CO)16(COD)] 7, [Ru6Pt2C(CO)15(COD)2] 8, obtained. The molecular and crystal structures of 3–8 have been established by single crystal X-ray analysis. Compounds 3–7 all contain an intact Ru core with Pt fragment(s) capping triangular or square faces. The resulting mixed-metal core is octahedral for the clusters Ru5Pt and face-capped octahedral for the clusters RunPtm (n = 5 or 6; m = 2 or 1). Only compound 8 did not follow this pattern, with the Pt fragments bridging two Ru–Ru edges of the otherwise unaltered Ru6C core.Keywords
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