Abstract: 2,2'- biphenyl-2,2'-dicarboxylate acid was prepared following the literature method and the resulting needle-like orange crystals Mn(C_(14)H_8O_4)(C_(12)H_(12)N_2) was obtained by hydrothermal method.The complex was characterized by Elemental, X-ray diffraction, IR analysis. Based on the TG curve, the thermal decomposition mechanism of the compound has also been discussed. Basd on the bpda group actting as a tetradenate μ3-bridging ligand,the thermal behavior indidates that the bpda group is more stable than the other ligand benzidine.

Key words: 2,2'- biphenyl-2,2'-dicarboxylate acid was prepared following the literature method and the resulting needle-like orange crystals Mn(C_(14)H_8O_4)(C_(12)H_(12)N_2) was obtained by hydrothermal method.The complex was characterized by Elemental, X-ray diffraction, IR analysis. Based on the TG curve, the thermal decomposition mechanism of the compound has also been discussed. Basd on the bpda group actting as a tetradenate μ3-bridging ligand,the thermal behavior indidates that the bpda group is more stable than the other ligand benzidine.