(Glycol-κ²O,O′)nitrosyl(η⁵-pentamethylcyclopentadienyl)ruthenium(II) bis(trifluoromethanesulfonate)

Abstract

The title compound, [Ru(C10H15)(NO)(HOCH2CH2OH)](CF3SO3)2, possesses a three-legged piano-stool geometry around the Ru atom, with an average Ru—O distance of 2.120 (6) Å and an Ru—N—O angle of 159.45 (14)°. The ethyl­eneglycol ligand forms a non-planar metallacyclic ring by chelating the Ru atom via the O atoms. The O⋯O distances of 2.554 (2) and 2.568 (2) Å are indicative of hydrogen bonding between coordinated ethyl­eneglycol and outer-sphere trifluoro­methane­sulfonate fragments. The crystal packing is stabilized by ionic forces and several CH3⋯·F (2.585 and 2.640 Å) and CH3⋯O inter­actions (2.391, 2.678, 2.694 and 2.699 Å) between the penta­methyl­cyclo­penta­dienyl ligand and trifluoro­methane­sulfonate anion. There is noticeable short inter­molecular contact [2.9039 (16) Å], between an O atom of the SO3 group and a C atom of the penta­methyl­cyclo­penta­dienyl ligand.

Reactivity of electrophilic Cp*Ru(NO) complex towards alcohols

“…The alcohol-coordinated product can be stabilized by the chelating effect of bidentate diol ligands. The structure of the complex salt 3 has been determined by single crystal X-ray diffraction [22]. The cationic structure of 3 consists of a three-legged "piano-stool" with two "legs" joined by the ethylene fragment of the HO-CH 2 CH 2 -OH molecule (Fig.…”