title: Crystal structure of bis-(2,2'-bi-pyridine)[N'-(quino-lin-2-ylmethylidene)pyridine-2-carbohydrazide]ruthenium(II) bis(tetra-fluorido-borate) di-chloro-methane tris-olvate.
abstract: The title compound, [Ru(C10H8N2)2(C16H12N4O)](BF4)2·3CH2Cl2, crystallizes with one complex dication, two BF4 (-) counter-anions and three di-chloro-methane solvent mol-ecules in the asymmetric unit. The central Ru(II) atom adopts a distorted octa-hedral coordination sphere with two 2,2'-bi-pyridine (bpy) and one quinoline-2-carbaldehyde (pyridine-2-carbon-yl)hydrazone (HL) ligand. The hydrazone ligand has a Z form and coordinates to the Ru(II) atom via the amide-O and imine-N atoms, affording a planar five-membered chelate ring, while its pyridine-N and quinoline-N donor atoms in the substituents are non-coordinating. The hydrazone N-H group forms an intra-molecular hydrogen bond with the quinoline-N atom. In the crystal, the quinoline moiety of HL shows the shortest π-π stacking inter-action with the pyridine substituent of HL in a neighbouring complex, the centroid-to-centroid distance being 3.793 (3) Å.
authors: Department of Chemistry, Faculty of Science, Okayama University, Okayama, 700-8530, Japan.
authors: Asami
authors: A
authors: Mori
authors: Department of Chemistry, Faculty of Science, Okayama University, Okayama, 700-8530, Japan.
authors: Takayoshi
authors: T
authors: Suzuki
authors: Department of Chemistry, Aichi University of Education, Kariya, Aichi 448-8542, Japan.
authors: Kiyohiko
authors: K
authors: Nakajima
keywords: crystal structure; intra­molecular hydrogen bonding; picolinolylhydrazone; ruthenium(II) polypyridyl complex.