Crystal structure, Hirshfeld surface analysis of 2-(ethoxycarbonyl)quinolinium tetrachlorido(quinoline-2-carboxylato-κ ² N , O )stannate(IV) monohydrate

The asymmetric unit of the title hydrated complex salt, (C 12 H 12 NO 2 )[Sn(C 10 H 6 NO 2 )Cl 4 ]·H 2 O, consists of one 2-(ethoxycarbonyl)quinolinium cation, one tetrachlorido(quinolinium-2-carboxylato)stannate(IV) anion and one water molecule. The compound was obtained by reaction of quinaldic acid with tin(II) chloride dihydrate in ethanol. The Sn IV atom is six-coordinated by four chloride ligands and by one N and one O atom from the quinolinium-2-carboxylate ligand, forming a distorted octahedral coordination environment. In the molecular structure, intramolecular O—H...O and C—H...Cl hydrogen bonds are observed. In the crystal, N—H...O, C—H...O and C—H...Cl hydrogen bonds link the components into a three-dimensional network. In addition, Y— X ...π (Sn—Cl...π) and π–π stacking interactions involving three aromatic rings are present, with centroid–centroid separations in the range 3.633 (2)–3.864 (2) Å.