Syntheses and structures of five 1D coordination polymers based on quinolone antibacterial agents and aromatic polycarboxylate ligands

摘要

A series of one-dimensional (1D) metal-quinolone coordination polymers, namely [Zn(levofH)(sdba)]·H _2O (1), [M(cfH)(oba)(H _2O) _2] (M = Co (2) and Ni (3)), [Cu _4(ppaH) _2(btec) _2(H _2O) _4]·3H _2O (4) and [Cu _4(norfH) _2(btec) _2(H _2O) _4]·3H _2O (5) (levofH = levofloxacin, cfH = ciprofloxacin, ppaH = pipemidic acid, norfH = norfloxacin, sdba = 4,4′-sulfonyldibenzoate, oba = 4,4′-oxybis(benzoate), btec = 1,2,4,5-benzenetetracarboxylate) have been hydrothermally synthesized and characterized by elemental analyses, IR spectra and TG analyses. Compound 1 is a unique 1D chiral metal-levofH complex. Compounds 2 and 3 are isostructural and contain similar chains constructed from [M(cfH) _2(H _2O) _2] fragments linked by oba ligands. The structures of compounds 4 and 5 are analogous and both feature ladders constructed from Cu ~II ions linked by btec ligands. In addition, the magnetic property of compound 4 has been studied, which exhibits an antiferromagnetic interaction.