title: Aqua-bis[1-ethyl-6-fluoro-7-(4-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxyl-ato]zinc(II) dihydrate.
abstract: The title compound, [Zn(C(17)H(19)FN(3)O(3))(2)(H(2)O)]·2H(2)O or [Zn(pef)(2)(H(2)O)]·2H(2)O, where pef is 1-ethyl-6-fluoro-7-(4-methyl-piperazin-4-yl)-4-oxo-1,4-dihydro-quinoline-3-carb-oxyl-ate, was synthesized under hydro-thermal conditions. The Zn(II) atom exhibits a distorted ZnO(5) square-pyramidal geometry defined by two bidentate O,O-bonded pef anions in the basal plane and one water mol-ecule in the apical position. A network of O-H⋯O and O-H⋯N hydrogen bonds is formed between the Zn(II) complexes and the uncoordinated water mol-ecules.
authors.affiliation: School of Pharmaceutical Science, Harbin Medical University, Harbin 150086, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Qi
authors.forename: Jing
authors.initials: J
authors.lastname: Huang
authors.forename: Zhe
authors.initials: Z
authors.lastname: An