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Synthesis, Crystal Structure, and Properties of Energetic Copper(II) Complex based on 3,5‐Dinitrobenzoic Acid and 1,5‐Diaminotetrazole
Author(s) -
Li Zhimin,
Yuan Yutao,
Zhang Yanqiang,
Liu Long,
Zhang Suojiang
Publication year - 2017
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201700086
Subject(s) - ammonium perchlorate , thermogravimetry , chemistry , differential scanning calorimetry , thermal decomposition , crystallography , thermal analysis , decomposition , inorganic chemistry , organic chemistry , thermal , thermodynamics , physics
Energetic copper(II) complexes based on 3,5‐dinitrobenzoic acid (HDNBA) and 1,5‐diaminotetrazole (DAT), Cu(DNBA) 2 (H 2 O) 2 ( 1 ) and Cu(DAT) 2 (DNBA) 2 ( 2 ) were synthesized and characterized by elemental analysis, IR spectroscopy, single‐crystal and powder X‐ray diffraction. In both complexes, Cu II was coordinated to a plane tetragon, by four oxygen atoms from two DNBA – ions and two coordinated H 2 O molecules for 1 , and by two oxygen atoms and two nitrogen atoms from different DNBA – ions and DAT ligands for 2 . Differential scanning calorimetry (DSC) and thermogravimetry (TG) analyses were employed to measure the thermal decomposition processes and non‐isothermal kinetics parameters of the complexes. The thermal decomposition onset temperatures of 1 and 2 are 321 and 177 °C. The apparent activation energies of the first exothermic decomposition peaks of 1 and 2 are 247.2 and 185.2 kJ · mol –1 . Both 1 (35 J, > 360 N) and 2 (12.5 J, > 360 N) are less sensitive than RDX. The catalytic effects on the decomposition of ammonium perchlorate (AP) of 1 and 2 were studied by DSC. All results supported the potential applications of the energetic complexes as additives of solid rocket propellants.