STRUCTURE OF (NONACARBONYL-1-KAPPA-4C,2-KAPPA-3C,3-KAPPA-2C)-MU-(HYDRIDO-2-3-KAPPA-2H)-MU-(METHOXYMETHYLIDYNE-2-3-KAPPA-2C)-(TRIPHENYLPHOSPHINE-3-KAPPA-P)-TRIANGULO-TRIRUTHENIUM(3 RU-RU)

[Ru3H(CO)9(C2H3O){(C6H5)3P}], M(r) = 861.5, monoclinic, C2/c, a = 21.793 (3), b = 15.945 (2), c = 18.648 (4) angstrom, beta = 99.45 (2)-degrees, V = 6392.0 angstrom 3, Z = 8, D(x) = 1.790 g cm-3, D(m) = 1.78 (1) g cm-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 14.4 cm-1, F(000) = 3360, room temperature, R = 0.035 for 3780 unique observed reflections [F > 3-sigma(F)]. The three Ru-Ru distances are very similar (av. 2.833 angstrom) with the hydride and COMe groups bridging a common Ru-Ru distance. One of the Ru atoms involved in the bridge is coordinated by the Ph3P ligand [P-Ru 2.320 (1) angstrom] which occupies an equatorial site with respect to the Ru3 triangle. The solution H-1, C-13, and P-31 NMR data are discussed.