Simple Preparation, Structure and Conductivity of Nickel(II) Benzenetricarboxylate Ni3(BTC)2•12H2O

Proton-conductive crystalline metal-organic framework nickel(II) benzenetricarboxylate Ni-3(BTC)(2)center dot 12H(2)O(MOF-Ni) was prepared by the reaction of nickel(II) nitrate and 1,3,5-benzenetricarboxylic(BTC) acid in a mixed solvent of N,N-dimethylformamide(DMF)/C2H5OH/H2O (1:1:1, v/v) at low temperature and short reaction time. It was characterized by thermogravimetric analyses (TG), FT-IR and N-2 adsorption-desorption. Single-crystal X-ray diffraction analysis indicated that the complex belongs to monoclinic system, space group C2 with a = 17.407(6), b = 12.878(5), c = 6.542(2) angstrom, beta = 112.07 degrees, V = 1359.0(8) angstrom(3), D-c = 1.971 g/cm(3), mu = 2.166 mm(-1) and Z = 2. Linear polarization resistance (LPR) analysis showed that the complex possesses semiconducting properties.