The first example of a double bridged diruthenium(II) complex containing the rare bridging S,O bidentate dimethyl sulfoxide ligand which defines a stable Ru–Cl–Ru–S–O five-membered ring

Abstract

The diruthenium(II) complex [Ru₂(µ-Cl)(µ-Me₂SO-S,O)Cl₃(Me₂SO-S)₃(CO)₂] has been synthesized from cis,fac-[RuCl₂(Me₂SO)₃(CO)] in refluxing acetone and characterized by X-ray crystallography; unusual solution (¹H and ¹³C NMR) and solid-state (IR) spectral features were found for the bridging sulfoxide, besides a remarkable inertness towards substitution reactions.