Bis(dihydrogen norfloxacinium) tri-μ2-chlorido-bis[trichloridobismuthate(III)] chloride dihydrate

Abstract

The title compound, {systematic name: (3-carboxy-1-ethyl-6-fluoro-7-piperazin-4-ium-1-yl-1H-quinolin-4-ylidene)oxonium tri-μ2-chlorido-bis[trichloridobismuthate(III)] chloride dihydrate], (C16H20FN3O3)2[Bi2Cl9]Cl·2H2O, is composed of [Bi2Cl9]3− anions lying on crystallographic twofold rotation axes, Cl− anions also on twofold axes, C16H20FN3O32+ cations, and water molecules. The BiIII coordination polyhedron is a distorted octahedron and two such octahedra share a triangular face to form the complex anion. There are three short terminal Bi—Cl bonds [2.5471 (6)–2.5781(5 Å] and three longer bridging bonds [2.8599 (5)–2.9984 (6) Å] in each octahedron. Anions, cations and water molecules are linked by hydrogen bonds to form a three-dimensional network. There are also π–π stacking interactions between quinoline ring systems, with an interplanar distance of 3.27 (1) Å.