Acta Cryst. (2008). E64, m1388-m1389  [ doi:10.1107/S1600536808028195 ]

trans-Diaquabis(2,2'-bipyridine-²N,N')ruthenium(II) bis(trifluoromethanesulfonate)

H. Jude, P. S. White, D. M. Dattelbaum and R. C. Rocha

Abstract: The title compound, trans-[Ru(bpy)₂(H₂O)₂](CF₃SO₃)₂ (bpy = 2,2'-bipyridine, C₁₀H₈N₂), crystallized from the decomposition of an aged aqueous solution of a dimeric complex of cis-Ru(bpy)₂ in 0.1 M triflic acid. The Ru^II ion is located on a crystallographic inversion center and exhibits a distorted octahedral coordination with equivalent ligands trans to each other. The Ru-O distance is 2.1053 (16) Å and the Ru-N distances are 2.0727 (17) and 2.0739 (17) Å. The bpy ligands are bent, due to inter-ligand steric interactions between H atoms of opposite pyridyl units across the Ru center. The crystal structure exhibits an extensive hydrogen-bonding network involving the water ligands and the trifluoromethanesulfonate counter-ions within two-dimensional layers, although no close hydrogen-bond interactions exist between different layers.

Online 11 October 2008

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