Solvothermal synthesis, crystal structure, and characterization of two new 2D Co(II)/Ni(II) coordination polymers with mixed-organic tectonics

Abstract

Two new isomorphous coordination polymers [Co(4,4′-Bpda)(Dpa)] n (I) and [Ni(4,4′-Bpda)(Dpa)] n · H2O (II) (4,4′-H2Bpda = benzophenone-4,4′-dicarboxylic acid, Dpa = dipyridin-4-ylamine) were synthesized under solvothermal condition and characterized by elemental analysis, FT-IR and single-crystal X-ray diffraction technique. Compounds I and II exhibit 2D helical layers resulting from alternating single helical chains and double helical chains, which feature uninodal 4-connected topology with a point symbol of 66.