Crystal structure of bis­(2,2′-bi­pyridine)[N′-(quino­lin-2-ylmethylidene)pyridine-2-carbohydrazide]ruthenium(II) bis(tetra­fluorido­borate) di­chloro­methane tris­olvate

The title compound, [Ru(C(10)H(8)N(2))(2)(C(16)H(12)N(4)O)](BF(4))(2)·3CH(2)Cl(2), crystallizes with one complex dication, two BF(4) (−) counter-anions and three di­chloro­methane solvent mol­ecules in the asymmetric unit. The central Ru(II) atom adopts a distorted octa­hedral coordination sphere with two 2,2′-bi­pyridine (bpy) and one quinoline-2-carbaldehyde (pyridine-2-carbon­yl)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 intra­molecular hydrogen bond with the quinoline-N atom. In the crystal, the quinoline moiety of HL shows the shortest π–π stacking inter­action with the pyridine substituent of HL in a neighbouring complex, the centroid-to-centroid distance being 3.793 (3) Å.