Crystal structure of poly[(aceto-nitrile-κN)(μ3-7-{[bis-(pyridin-2-ylmeth-yl)amino]-meth-yl}-8-hy-droxy-quinoline-5-sulfonato-κ4N,O:O':O'')sodium]

In the title compound, the Na I atom has a distorted square-pyramidal coordination environment. The mol­ecular structure exhibits an intra­molecular bifurcated O—H⋯[N(tertiary amine), N(pyrid­yl)] hydrogen bond. In the crystal, the mol­ecules are linked by the bridging Na— O (sulfonato) coordination bonds and the inter­molecular C—H⋯O hydrogen bonds, forming a three-dimensional network structure. In the title compound, [Na(C 22 H 19 N 4 O 4 S)(CH 3 CN)] n , the Na I atom adopts a distorted square-pyramidal coordination geometry, formed by one N and one O atom of the qunolinol moiety in the ligand, two O atoms of sulfonate moieties of two adjacent ligands and the N atom of the coordinated aceto­nitrile solvent. The Na I atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a sulfonate O atom of a neighboring ligand. Three N atoms of the bis­(pyridin-2-ylmeth­yl)amine moiety in the ligand are not coordinated by the sodium atom. The mol­ecule forms an intra­molecular bifurcated O—H⋯[N(tertiary amine),N(pyridine)] hydrogen bond, generating S (6) and S (5) rings. In the crystal, four mol­ecules are linked by four Na—O(sulfonato) bridged coordination bonds, forming a supra­molecular centrosymmetric tetra­mer unit comprising an eight-membered ring, and generating a two-dimensional network sheet. The mol­ecules of different sheets form inter­molecular C—H⋯O hydrogen bonds, and thereby a three-dimensional network structure.