Two Novel Nitrogen-rich Energetic Coordination Compounds M-2(DAT)(5)(H2O)(3)(TNR)(2) (M = Zn and Co): Synthesis, Characterization, Thermal Properties and Sensitivity

Two novel energetic coordination compounds Zn-2(DAT)(5)(H2O)(3)(TNR)(2) and Co-2(DAT)(5)(H2O)(3)(TNR)(2) were synthesized and their structures were characterized by elemental analysis and FT-IR spectroscopy. The crystal structures were determined by single-crystal X-ray diffraction. The results reveal that the compounds have similar molecular structures and the crystals belong to the triclinic system, space group P (1) over bar with a = 11.491(3), b = 13.564(3), c = 15.496(3) angstrom, V = 2180.4(8) angstrom(3). C17H28 Zn2N36O19. M-r = 1203.02 g.mol(-1), D-c = 1.832 g.cm(-3), mu(MoK alpha) = 1.221 mm(-1), F(000) = 1223, Z = 2, R = 0.0596 and wR = 0.1514 for 11289 observed reflections (I > 2 sigma(I)) for Zn-2(DAT)(5)(H2O)(3)(TNR)(2) and a = 11.5291(13), b = 13.4894(15), c = 15.4852(17) angstrom, V = 2164.8(4) angstrom(3), C17H28Co2N36O19, M-r = 1190.14 g.mol(-1), D-c = 1.826 g.cm(-3), mu(MoK alpha) = 0.888 mm(-1), F(000) = 1211, Z = 2, R = 0.0576 and wR = 0.1431 for 11218 observed reflections (I > 2 sigma(I)) for Co-2(DAT)(5)(H2O)(3)(TNR)(2), respectively. The thermal decomposition characteristics of the compounds were investigated using differential scanning calorimetry and thermal gravimetry-differrential thermal gravimetry. The results of thermal decomposition processes were similar for the two compounds. Both undergo four-step decomposition after the loss of coordinated H2O molecules. The final solid residues for the two DAT complexes were the corresponding metal oxides. The kinetic parameter of the first exothermic process of the compounds was studied by applying the Kissinger and Ozawa-Doyle methods. The thermodynamic parameters of the activation could be calculated. Sensitivity tests revealed that Co-2(DAT)(5)(H2O)(3)(TNR)(2) was more sensitive than Zn-2(DAT)(5)(H2O)(3)(FNR)(2).