A series of novel 1D coordination polymers constructed from metal–quinolone complex fragments linked by aromatic dicarboxylate ligands

Abstract Self-assembly of quinolones with metal salts in the presence of aromatic dicarboxylate ligands affords a series of novel 1D metal–quinolone complexes, namely [Mn(Hppa)(oba)]·3H 2 O ( 1 ), [Co(Hppa)(oba)]·3.25H 2 O ( 2 ), [Zn(Hppa)(sdba)]·1.5H 2 O ( 3 ), [Mn(Hcf)(bpda)(H 2 O)]·2H 2 O ( 4 ), [Mn(Hppa) 2 (bpdc)] ( 5 ) and [Mn(Hlome) 2 (bpdc)]·4H 2 O ( 6 ) (Hppa = Pipemidic acid, Hcf = ciprofloxacin, Hlome = lomefloxacin). The structures of compounds 1 – 3 consist of novel polymeric chains spanning two different directions, which display an intriguing 1D → 3D inclined polycatenation of supramolecular ladders. Compound 4 exhibits a chain compound formed from the interconnection of [Mn 2 (Hcf) 2 ( μ -CO 2 ) 2 ] dimers with bpda ligands. Compounds 5 and 6 are similar chain compounds constructed from [Mn(Hppa) 2 ] (or [Mn(Hlome) 2 ]) fragments linked by bpdc ligands. The magnetic properties of 4 have been studied, which indicate the existence of antiferromagnetic interactions. Furthermore, the luminescent properties of compound 3 are discussed.