Bis{[μ-bis(diphenylphosphino)methane-1:2κ2P:P′]nonacarbonyl-1κ3C,2κ3C,3κ3C-[tris(4-methoxyphenyl)arsine-3κAs]-triangulo-triruthenium(0)} dichloromethane solvate

Omar Bin Shawkataly,Hoong-Kun Fun,Chin Sing Yeap,Imthyaz Ahmed Khan

doi:10.1107/s1600536809052088

Omar Bin Shawkataly, Hoong-Kun Fun + Show 2 more

Open Access

https://doi.org/10.1107/s1600536809052088

Copy DOI

Abstract

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—H⋯O hydrogen bonds. An intermolecular C—H⋯O hydrogen bond and weak intermolecular C—H⋯π interactions further stabilize the crystal structure.

Highlights

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

Summary

Structure Reports

Key indicators: single-crystal X-ray study; T = 100 K; mean (C–C) = 0.002 Å; disorder in solvent or counterion; R factor = 0.023; wR factor = 0.055; data-toparameter ratio = 34.2. 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. The three arsine-substituted benzene rings make dihedral angles of. The molecules are linked together into chains down the b axis via intermolecular C—H O hydrogen bonds. An intermolecular C—H O hydrogen bond and weak intermolecular C—H interactions further stabilize the crystal structure

Data collection

Mo K radiation

Special details