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

Abstract

The title compound, {systematic name: (3-carb-oxy-1-ethyl-6-fluoro-7- piperazin-4-ium-1-yl-1H-quinolin-4-yl-idene)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, C16H20FN3O3 2+ cations, and water mol-ecules. The Bi III coordination polyhedron is a distorted octa-hedron and two such octa-hedra 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 octa-hedron. Anions, cations and water mol-ecules are linked by hydrogen bonds to form a three-dimensional network. There are also π-π stacking inter-actions between quinoline ring systems, with an inter-planar distance of 3.27 (1) Å.