Study on one-dimensional chain coordination polymer [Cd(1,3,5-benzenetricarboxylate)(pyridine)3]n: diffusion synthesis, crystal structure, and thermal analyses

The crystal of the coordination polymer [Cd(1,3,5-btc)(py)3]n (1; 1,3,5-btc: 1,3,5-benzenetricar- boxylate; py: pyridine) has been synthesized, cultured by diffusion method, and characterized by X-ray single crystal diffraction, elemental analysis, and FTIR spectroscopy. In 1,3,5-benzenetricarboxylates with two kinds of coordination styles as bridging ligands, the cadmium(III) centers are linked together to form one-dimensional molecular chains. Thermal decomposition mechanisms were predicted on the basis of TG–DTG curve and FTIR spectra of the chain coordination polymer. Kinetic equations of the second and third mass loss stages were determined from the DTG curve using integral and differential methods.