Synthesis, Crystal Structure, and Properties of Energetic Copper(II) Complex based on 3,5-Dinitrobenzoic Acid and 1,5-Diaminotetrazole

Zhimin Li, Yutao Yuan, Yanqiang Zhang*, Long Liu, Suojiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Energetic copper(II) complexes based on 3,5-dinitrobenzoic acid (HDNBA) and 1,5-diaminotetrazole (DAT), Cu(DNBA)2(H2O)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, CuII was coordinated to a plane tetragon, by four oxygen atoms from two DNBA ions and two coordinated H2O 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.

Original languageEnglish
Pages (from-to)647-652
Number of pages6
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume643
Issue number10
DOIs
Publication statusPublished - 18 May 2017
Externally publishedYes

Keywords

  • 1,5-Diaminotetrazole; 3,5-Dinitrobenzoic acid; Copper; Energetic complexes; Additives

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