Acta Cryst. (2009). E65, m1620-m1621  [ doi:10.1107/S1600536809047229 ]

[-Bis(diphenylarsino)methane-1:2²As:As']nonacarbonyl-1³C,2³C,3³C-[tris(4-fluorophenyl)phosphine-3P]-triangulo-triruthenium(0)

O. bin Shawkataly, I. A. Khan, C. S. Yeap and H.-K. Fun

Abstract: In the title triangulo-triruthenium compound, [Ru₃(C₂₅H₂₂(As₂)(C₁₈H₁₂F₃P)(CO)₉], the bis(diphenylarsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom. Both the phosphine and arsine ligands are equatorial with respect to the Ru₃ triangle. Additionally, each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The three phosphine-substituted rings make dihedral angles of 87.76 (13), 57.43 (13) and 73.81 (12)° with each other. The dihedral angles between the pairs of rings are 69.78 (14) and 83.38 (16)° for the two diphenylarsino groups. In the crystal packing, molecules are linked by intermolecular C-HF and C-HO hydrogen bonds, forming two-dimensional planes parallel to the ab plane. These planes are also linked by intermolecular C-HO hydrogen bonds into a three-dimensional framework. Intermolecular C-H interactions further stabilize the crystal structure.

Online 21 November 2009

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