Synthesis, structure analysis and thermal behavior of two new complexes: Cu(NH3)4(AFT)2 and Cu(C3H6N2H4)2(AFT)2

Abstract Two new energetic complexes base on nitrogen-rich compound 4-amino-3-(5-tetrazolate)-furazan: Cu(NH 3 ) 4 (AFT) 2 ( 1 ) and Cu(C 3 H 6 N 2 H 4 ) 2 (AFT) 2 ( 2 ) were synthesized by reaction of Cu(NO 3 ) 2 ·3H 2 O with ammonia and diaminopropane. For complexes 1 and 2 , they were fully characterized by EA and FT-IR. The crystal structure of complex 1 was determined by single-crystal X-ray diffraction. X-ray single-crystal diffraction analysis revealed that the complex 1 crystallized in orthorhombic crystal system. The thermal decomposition behaviors of the two complexes were studied with DSC and TG/DTG methods. The non-isothermal kinetics parameters were calculated by the Kissinger's method and Ozawa-Doyle's method for the main exothermic decomposition processes of the title compounds. Moreover, the entropy of activation (Δ S ≠ ), the enthalpy of activation (Δ H ≠ ) and the free energy of activation (Δ G ≠ ) were calculated. The specific heat capacity ( C p ) and mechanical sensitivity were also investigated.