Structural studies on ruthenium carbonyl hydrides. X. Crystal structure of (μ-H)Ru₃(CO)₁₀(μ-SEt)

The complex (μ-H)Ru₃(CO)₁₀(μ-SEt) crystallizes in the centrosymmetric orthorhombic space group Pbca (No. 61) with a 17.361(2), b 12.804(4), c 17.484(3) Å, V 3886.5(14) ų and Z = 8. Diffraction data (Mo-K_α, 2θ = 4.0-45.0°) were collected with a Syntex P2₁ automated diffractometer and the structure was solved and refined to R 5.9% for 1800 reflections with |F_o| > 3σ(| F_o|) (R4.1% for those 1413 reflections with |F₀| > 6σ(|F₀|)). The complex contains a triangular cluster of ruthenium atoms in which Ru(2) and Ru(3) are each linked to three terminal carbonyl ligands while Ru(1) is linked to four. Additionally Ru(2) and Ru(3) are bridged by a SEt ligand [Ru(2)S 2.389(4), Ru(3)S 2.391(4) Å and Ru(2)SRu(3) 73.0(1)°] and a hydride ligand. The di-bridged RuRu linkage (Ru(2)Ru(3) 2.843(1) Å is slightly longer than the non-bridged bonds (Ru(1)-Ru(2) 2.831(2) and Ru(1)Ru(3) 2.825(1) Å).