title: Aqua-[2-(2-pyrid-yl)-1,8-naphthyridine-κN,N](2,2':6',2''-terpyridine-κN,N',N'')ruthenium(II) bis-(hexa-fluorido-phosphate) acetone sesquisolvate.
abstract: The asymmetric unit of the title compound, [Ru(C(13)H(9)N(3))(C(15)H(11)N(3))(H(2)O)](PF(6))(2)·1.5C(3)H(6)O, consists of two crystallographically independent Ru(II) complexes. Each complex is approximately octa-hedral with the Ru(II) atom bound by an N,N'-coordinated 2-(2-pyrid-yl)-1,8-naphthyridine (pynp) ligand, a meridional 2,2':6',2''-terpyridine (tpy) ligand and one aqua ligand. The tpy ligand is coordinated in a planar tridentate fashion with the central N atom closest to the Ru(II) atom. The aqua ligand is trans to the pyridine N atom of pynp. The long Ru-O distances [2.150 (5) and 2.138 (5) Å] are typical for aqua ligands in polypyridyl ruthenium complexes. In the crystal, both intra-molecular O-H⋯N and inter-molecular O-H⋯O hydrogen bonds are observed.
authors.forename: Dai
authors.initials: D
authors.lastname: Oyama
authors.forename: Kazumi
authors.initials: K
authors.lastname: Yuzuriya
authors.forename: Tsugiko
authors.initials: T
authors.lastname: Takase