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DOI: 10.1039/A606040D (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 669-674

Synthesis and characterisation of the hexanuclear ruthenium diphosphine clusters [Ru6C(CO)15{µ-Ph2P(CH2 [hair space])nPPh2}] (n = 1–4); crystal structures where n = 1–3

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Trushar Adatia, Gráinne Conole, Simon R. Drake, Brian F. G. Johnson, th Kessler, Jack Lewis and Mary McPartin

Abstract

Treatment of a hexane solution of the complex [Ru6C(CO)17[hair space]] and 1 equivalent of the organodiphosphine ligands Ph2P(CH2[hair space])nPPh2 (n = 1–3) produced the series of derivatives [Ru6C(CO)15{µ-Ph2P(CH2 [hair space])nPPh2[hair space]}] 1–3, respectively, in ca. 74–94% yield. These clusters have been characterised by IR and NMR spectroscopy and in the solid state by X-ray analyses. The three related compounds all adopt a similar octahedral metal core geometry with the bidentate diphosphine ligand bridging one Ru–Ru edge of the metal polyhedron. Reaction of [Ru6C(CO)17[hair space]] with 1,4-bis(diphenylphosphine)butane, Ph2P(CH2[hair space])4PPh2, yielded two products which differ in the mode of bonding of the disphospine ligand, the major product [Ru6C(CO)16{Ph2P(CH2 [hair space])4PPh2-P}] 4a in ca. 74% yield and the minor product [Ru6C(CO)15{µ-Ph2P(CH2 [hair space])4PPh2}] 4b in ca. 10% yield.

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