Saturated and unsaturated triruthenium clusters containing three sterically demanding phosphine ligands: synthesis and structure of [Ru3(CO)9(PCy3)3] and [Ru3H2(CO)6(PCy3)3]

The reaction of Na[Ru3H(CO)11] with an excess of tricyclohexylphosphine in methanol afforded, depending on the reaction conditions, the tri-substituted clusters [Ru3(CO)9(PCy3)3] (48e) and [Ru3H2(CO)6(PCy3)3] (44e), inaccessible hitherto.

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