cis-(2,2'-Bipyridyl-N,N')carbonyl(methanoato-C)(η²-2,2':6',2''-terpyridyl-N,N')ruthenium(II) Hexafluorophosphate

The title compound, [Ru(CHO₂)(C₁₀H₈N₂)(C₁₅H₁₁N₃)(CO)]PF₆ or cis-[Ru(bpy)(η²-tpy)(CO)(COOH)]PF₆ (where bpy is 2,2′-bipyridyl and tpy is 2,2′:6′,2′′-terpyridyl), has distorted octahedral geometry about the Ru atom, a bidentate terpyridyl ligand and a fully chelated bipyridyl ligand. The terminal carbonyl and carboxyl groups are cis. The Ru—C—O angle (terminal carbonyl) is distorted from linearity [173.7 (4)°] by the pendant pyridyl group of the N,N′-bound tpy ligand, which is hydrogen bonded to the hydroxyl proton of the carboxyl group.

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