Preparation, crystal structure and thermal studies of cadmium perchlorate complex with 2,2′-bipyridine

Abstract

The mixed-ligand mononuclear hexacoordinate cadmium perchlorate complex [Cd(2,2′-bipy)2(H2O)(ClO4)]ClO4 was synthesized and characterized by FT-IR, elemental analysis and X-ray crystal structure determination. Thermal characteristics of the complex were studied by thermogravimetry (TG), differential thermal analysis and differential scanning calorimetry. The complex is stable at normal temperature and undergoes dehydration in between the temperature range 95–200 °C with loss of coordinated water (2.8 %). Thereafter, on increasing temperature, dehydrated complex shows some gradual mass loss followed by fast decomposition at higher temperature (265–380 °C). The kinetic parameters for the decomposition of the complex were investigated by applying model-fitting and isoconversional method on isothermal TG data recorded at five different temperatures. To explore the response of complex to sudden high heat, explosion delay time was recorded at five different temperatures, and kinetics of explosion was investigated using these data.