Assembly of 1D cadmium(II) coordination polymer with Bis(2-benzimidazole) and 1,3-benzenedicarboxylic acid mixed ligands

A novel one-dimensional cadmium(II) compound: {[CdL(H₂C ₂EIm)(H₂O)](H₂O) ₂n (1) with 1,3-benzene dicarboxylic acid (H₂L) and 2,2'-(1,2-ethanediyl)bis(1H- benzimidazole) (H₂C₂EIm) has been synthesized by means of hydrothermal method and characterized by Xray single-crystal diffraction. The crystal belongs to the triclinic system triclinic, space group P-1 with a gamma;= 1.0189(5) nm, b = 1.1204(5) nm, c = 1.2319(5) nm, α= 115.824(5)°, β= 98.363(5)°, &= 102.654(5)°, V = 1.1878(9) nm3<s/up>, Dc = 1.649 g cm^-3<s/up>, Z = 2, F(000) = 594, Goof= 0.997, R1 = 0.0358, wR₂ = 0.0881. The compound 1 shows a novel one-dimensional (1D) chain structure along the c axis and further extended into a 1D double chain structure through π- π packing interactions. The intermolecular hydrogen bonds contribute to the formation of the three-dimensional supramolecular architecture and stabilize the crystal structure.