[μ-Bis(di-o-tolylphosphanyl)methane-1:2κ2 P:P′]nonacarbonyl-1κ3 C,2κ3 C,3κ3 C-[diphenyl(phenylsulfanylmethyl)phosphane-3κP]-triangulo-triruthenium(0) dichloromethane 0.25-solvate

In the title compound, [Ru3(C29H30P2)(C19H17PS)(CO)9]·0.25CH2Cl2, the atoms of the dichloromethane solvent molecule have a fractional site occupancy of 0.25; the dichloromethane molecule is disordered about an inversion centre. The bis(di-o-tolylphosphanyl)methane ligand bridges an Ru—Ru bond and the monodentate phosphane ligand bonds to the third Ru atom; its S-bonded phenyl ring is disordered over two orientations in a 0.53 (4):0.47 (4) ratio. All the P atoms are equatorial with respect to the Ru3 triangle: each Ru atom also bears one equatorial and two axial terminal carbonyl ligands. The dihedral angles between the two benzene rings attached to each P atom of the diphenylphosphanyl ligand are 68.4 (2) and 71.5 (2)°. In the crystal, molecules are linked into [001] chains via intermolecular C—H⋯O hydrogen bonds. Weak intermolecular C—H⋯π interactions also occur.

In the title compound, [Ru 3 (C 29 H 30 P 2 )(C 19 H 17 PS)(CO) 9 ]Á-0.25CH 2 Cl 2 , the atoms of the dichloromethane solvent molecule have a fractional site occupancy of 0.25; the dichloromethane molecule is disordered about an inversion centre. The bis(di-o-tolylphosphanyl)methane ligand bridges an Ru-Ru bond and the monodentate phosphane ligand bonds to the third Ru atom; its S-bonded phenyl ring is disordered over two orientations in a 0.53 (4):0.47 (4) ratio. All the P atoms are equatorial with respect to the Ru 3 triangle: each Ru atom also bears one equatorial and two axial terminal carbonyl ligands. The dihedral angles between the two benzene rings attached to each P atom of the diphenylphosphanyl ligand are 68.4 (2) and 71.5 (2) . In the crystal, molecules are linked into [001] chains via intermolecular C-HÁ Á ÁO hydrogen bonds. Weak intermolecular C-HÁ Á Á interactions also occur.

Experimental
All manipulations were performed under a dry oxygen-free nitrogen atmosphere using standard Schlenk techniques.

Refinement
All hydrogen atoms were positioned geometrically and refined using a riding model with C-H = 0.93-0.97 Å and U iso (H) = 1.2 or 1.5U eq (C). The C31-C36 benzene ring is disordered over two positions with refined site occupancies of 0.53 (4):0.47 (4). The disordered components are subjected to simulation restrain. The dichloromethane molecule is refined sup-2 isotropically and with fixed occupancy of 0.25. The maximum and minimum residual electron density peaks of 0.55 and -0.66 e Å -3 were located 0.70 and 0.68 Å from the Cl1 and Ru2 atom, respectively. Fig. 1. The molecular structure of the title compound with 50% probability ellipsoids for non-H atoms. Minor disorder component is shown with open bonds. Atoms with suffix X are generated by the symmetry operation (-x, -y, 1 -z). [µ-Bis(di-o-tolylphosphanyl)methane-1:2κ 2 P:

Special details
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K.
Geometry. All e.s. Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating Rfactors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.