Acta Cryst. (2008). E64, m293  [ doi:10.1107/S1600536807067426 ]

(Glycol-²O,O')nitrosyl(⁵-pentamethylcyclopentadienyl)ruthenium(II) bis(trifluoromethanesulfonate)

S. Munie, A. Larsen and M. Gembicky

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 OO 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 CH₃O 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.

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