Synthesis, Crystal Structure, and Electrochemical Property of the Complex [Co(tfbdc)(DMF)2(H2O)2] (tfbdc = Tetrafluoroterephthalate; DMF = N,N-Dimethylformamide)

One complex [Co(tfbdc)(DMF)(2)(H2O)(2)] (tfbdc = tetrafluoroterephthalate) was synthesized by the reaction of tetrafluoroterephthalatic acid with cobalt(II) nitrate hexahydrate in mixture solvent. This complex was characterized by elemental analysis, infrared (IR) spectra, cyclic voltammetry, and x-ray single-crystal structure analysis. This complex crystallizes in the monoclinic system with space group P2(1)/n. The Co(II) ion has a distorted octahedral geometry coordinated by two O atoms from two tetrafluoroterephthalate (tfbdc), two O atoms from two water molecules, and two O atoms from two N,N-dimethyl formamide molecules. Each tfbdc ligand bridges two Co(II) ions in end-to-end fashion, forming a straight chain. These chains are connected by hydrogen bonds, forming a two-dimensional supramolecular network structure.