Synthesis and Single Crystal Structure Determination of Bis(carbido)bis(μ-diphenylphosphido)heptadecacarbonyloctaruthenium-Dichloromethane (1/1), Ru₈(μ₆-C)(μ₅-C)(μ-PPh₂)₂(CO)₁₇.CH₂Cl₂

Abstract

The synthesis and room-temperature single-crystal X-ray structure determination of the title compound are recorded. Crystals are monoclinic, P 2₁/c, a 14.43(2), b 18.39(1), c 23.64(3) Ǻ, β 123.16(7)°, Z = 4, isostructural with the recently described Fe₃Ru₅ analogue; R was 0.048 for 6892 'observed' data [I > 3σ(I)]. The cluster is one of the few containing separated carbide ligands within a polyhedral metal skeleton, consisting of an Ru₅C square pyramid and an Ru₆C octahedron sharing a triangular face, with two PPh₂ groups bridging opposite Ru-Ru vectors in each polyhedron.