Received 30 November 2009
The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru3(C21H21AsO3)(C25H22P2)(CO)9]·CH2Cl2, contains one triangulo-triruthenium complex molecule and one half-molecule of the dichloromethane solvent. The dichloromethane solvent lies across a crystallographic inversion center leading to the molecule being disordered over two positions of equal occupancy. The bis(diphenylphosphino)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru3 triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The three arsine-substituted benzene rings make dihedral angles of 82.00 (6), 76.67 (7) and 66.09 (6)° with each other. The dihedral angles between the two benzene rings are 80.12 (8) and 78.34 (7)° for the two diphenylphosphino groups. In the crystal packing, the molecules are linked together into chains down the b axis via intermolecular C-HO hydrogen bonds. An intermolecular C-HO hydrogen bond and weak intermolecular C-H interactions further stabilize the crystal structure.
For general background to triangulo-triruthenium derivatives, see: Bruce et al. (1985, 1988a,b). For related structures, see: Shawkataly et al. (1998, 2004, 2009). For the synthesis of tris(4-methoxyphenyl)arsine, see: Blicke & Cataline (1938) and for that of -bis(diphenylphosphino)methanedecacarbonyltriruthenium(0), see: Bruce et al. (1983). For the stability of the temperature controller used for the data collection, see: Cosier & Glazer (1986).
Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SJ2701 ).
The authors would like to thank the Malaysian Government and Universiti Sains Malaysia (USM) for the Research grant 1001/PJJAUH/811115. IAK is grateful to USM for a Postdoctoral Fellowship and to Gokhale Centenary College, Ankola, Karnataka, India, for postdoctoral study leave. HKF thanks USM for the Research University Golden Goose grant 1001/PFIZIK/811012. CSY thanks USM for the award of a USM Fellowship.
Blicke, F. F. & Cataline, E. L. (1938). J. Am. Chem. Soc., 60, 419-422.
Bruce, M. I., Liddell, M. J., Hughes, C. A., Patrick, J. M., Skelton, B. W. & White, A. H. (1988a). J. Organomet. Chem. 347, 181-205.
Bruce, M. I., Liddell, M. J., Shawkataly, O. bin, Hughes, C. A., Skelton, B. W. & White, A. H. (1988b). J. Organomet. Chem. 347, 207-235.
Bruce, M. I., Matisons, J. G. & Nicholson, B. K. (1983). J. Organomet. Chem. 247, 321-343.
Bruce, M. I., Shawkataly, O. bin & Williams, M. L. (1985). J. Organomet. Chem. 287, 127-131.
Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Cosier, J. & Glazer, A. M. (1986). J. Appl. Cryst. 19, 105-107.
Shawkataly, O. bin, Khan, I. A., Yeap, C. S. & Fun, H.-K. (2009). Acta Cryst. E65, m1620-m1621.
Shawkataly, O. bin, Ramalingam, K., Fun, H.-K., Abdul Rahman, A., & Razak, I. A. (2004). J. Cluster Sci. 15, 387-394.
Shawkataly, O. bin., Ramalingam, K., Lee, S. T., Parameswary, M., Fun, H.-K. & Sivakumar, K. (1998). Polyhedron, 17, 1211-1216.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.