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Journal of Structural Chemistry

2011 year, number 4


A. D. Vasiliev, N. N. Golovnev
Keywords: fluoroquinolones, ciprofloxacin, bromide, copper(II), crystal structure, hydrogen bonds
Pages: 829-832


A new compound C17H20FN3O·CuBr·H2O is synthesized in the crystal form, where C17H18FN3O3 (CfH, ciprofloxacin) is 4-oxo-7-(1-piperazinyl)-6-fluoro-1-cyclopropyl-1,4-dihydroquinoline-3-carboxylic acid. Crystallographic data of ciprofloxacinium tetrabromocuprate(II) monohydrate, C17H22Br4CuFN3O4: a = 8.214(1) Å, b = 10.781(2) Å, с = 13.703(2) Å, α = 85.144(2)°, β = 79.119(2)°, γ = 84.018(2)°, V =
1182.5(4) Å3, space group, Z = 2. Supramolecular architecture of the crystal differs from that established for C17H20FN3O·CuCl·H2O by the absence of π-π interactions of the aromatic rings of CfH ions and also the structural motifs formed by intermolecular hydrogen bonds.