Synthesis, structure and characterization of 1-D polymer {[Sr(CHZ) sub(2)(ClO sub(4))]ClO sub(4)} sub()n a new concept for designing primary explosives

A novel alkaline-earth metal perchlorate polymer complex {[Sr(CHZ) sub(2)(ClO sub(4))]ClO sub(4)} sub()n(1, CHZ = carbohydrazide) was synthesized and characterized. The X-ray single crystal diffraction results illustrate that the structure of the title complex belongs to the triclinic system, space group P1&cmb.macr; . In 1, every Sr super(2+) ion was ennea-coordinated with four CHZ groups and one perchlorate group. Noticeably, CHZ adopted a tridentate coordination mode with different Sr super(2+) ions, leading to a multinuclear structure. Therefore, the whole molecule was extended to a super 1-D polymer, and the configuration of Sr super(2+) ion was a tricapped trigonal prism of a tetradecahedron. The DSC result shows only one exothermal decomposition with peak temperature at 296.1 degree C. The TG-DTG curve demonstrates a 67.8% mass loss from 266 degree C to 332 degree C. Non-isothermal kinetic and thermodynamic parameters were obtained viaKissinger's method as well as Ozawa's method. The critical temperature of thermal explosion, Delta S, Delta H, and Delta Gwere calculated as 248.1 degree C, 35.61 J K super(-1) mol super(-1), 161.15 kJ mol super(-1), 152.42 kJ mol super(-1), respectively. Additionally, the sensitivities towards impact and friction were assessed viarelevant standard methods.