Three new Co(II)/Ni(II) cordination polymers based on 3,3-biphenyl dicarboxylic acid and N-donor Co-ligands: Synthesis, crystal structures and magnetic properties

Abstract

Three new Co(II)/Ni(II) cordination polymers [Co(Bpdc)(Bipy)]n (I) and [Co2(Bpdc)2(Dps)2]n (II) and [Ni(Bpdc](Dps)]n (III) (H2Bpdc = 3,3'-biphenyl dicarboxylic acid, Bipy = 2,2'-bipyridine, and Dps = 4,4'-dipyridyl sulfide) have been synthesized via hydrothermal method and characterized by elemental analysis, FT-IR, PXRD and single-crystal X-ray diffraction (CIF files CCDC nos. 994521 (I), 994522 (II), 1027995 (III)). Compound I is a 3D supremolecular structures extending through 1D double chain by the π···π stack interactions. However, compound II and III are topological isomorphic, which features a 3D four-fold interpenetrated neworks with 4-connected dia topology. Moreover, thermogravimetric analysis and magnetic properties of I and II were also discussed.