A One-Dimensional Coordination Polymer Constructed from Cadmium(II) Cations and Sparfloxacinate Anions

Crystals

Zhe An²  Jing Gao¹ 

[1] Department of Pharmacy, Mudanjiang Medical University, Heilongjiang 157011, China;School of Chemistry and Life Science, Guangdong University of Petrochemical Technology, Maoming 525000, China;

关键词: one-dimensional coordination polymer;    sparfloxacin;    cadmium;   

DOI  :  10.3390/cryst2041366

来源: mdpi

【 摘 要 】

The synthesis and crystal structure of the one-dimensional coordination polymer, [Cd(spar)₂]_n·n(H₂O), are described, where spar⁻ is the sparfloxacinate anion, C₁₉H₂₁N₄O₃F₂⁻. The Cd²⁺ ion is bonded to four spar⁻ ligands: Two O,O-chelate with their β-keto carboxylate groupings and two are monodentate-bound through a carboxylate O atom, to result in a distorted CdO₆ octahedral coordination geometry. The bridging ligands lead to [100] polymeric chains in the crystal and N–H···O hydrogen bonds and possible weak aromatic p–p stacking interactions help to consolidate the structure. Crystal data: C₃₈H₄₄CdF₄N₈O₇, M_r = 913.21, triclinic, (No. 2), Z = 2, a = 9.2256(4) Å, b = 12.8767(5) Å, c = 17.4297(7) Å, α = 89.505(2)°, β = 85.062(2)°, γ = 70.757(2)°, V = 1947.20(14) ų, R(F) = 0.036, wR(F²) = 0.082.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.