Thermal Decomposition Mechanisms of a Three-dimensional Framework Coordination Polymer [Cu(HCOO)2(H2O)2]∞

Abstract

The crystal of [Cu(HCOO)2(H2O)2]∞ (polymer 1) has been synthesized and cultured using the hydrothermal method. The thermal decomposition mechanisms and the associated kinetics of polymer 1 have been investigated based on the TG-DTG and DSC analyses. The most probable kinetic model function of the endothermic process was suggested by comparison of the kinetic parameters obtained from the analysis of the DSC curves by Kissinger's, Ozawa's, integral, and differential methods. The crystal of polymer 1 was characterized by X-ray single crystal diffraction, elemental analysis, and FTIR spectroscopy techniques. The coordination polymer crystallizes in monoclinic system, P21/c space group with crystal parameters of a=0.8533(2) nm, b=0.7151(2) nm, c=0.9463(2) nm, β=96.94(0)°, V=0.5732(2) nm3, Z=4, and Dc=2.197 g·cm-3. In the coordination polymer, with the formates as space linkers, two types of copper centers are joined together to form three-dimensional frameworks. © 2006 Chinese Chemical Society and College of Chemistry and Molecular Engineering, Peking University.