Two novel coordination polymers with different molecular tectonics based on cobalt–succinate-organoamine systems

Two novel coordination polymers with different N-donors, [Co(suc)(im)]n (1) and [Co(suc)(phen)]n (2) (suc = succinic dianion, im = imidazole, phen = 1,10-phenanthroline) were synthesized by solvothermal technique and structurally characterized by elemental analysis, IR and single crystal X-ray diffraction. Compound 1 exhibits a novel molecular tectonics like fourfold entangled catenane. Compound 2 shows a two-dimensional structure with two types of rings observed. They exhibit different photoluminescence properties.