Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (09): 2410-2416.doi: 10.3866/PKU.WHXB20100919

• STRUCTURE CHEMISTRY • Previous Articles     Next Articles

Synthesis, Crystal Structure, Thermal Behavior and Sensitivity of [Mn(AZT)2(H2O)4] (HTNR)2·4H2O

FENG Jin-Ling1, ZHANG Jian-Guo1, ZHANG Tong-Lai1, CUI Yan2   

  1. 1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, P. R. China;
    2. The 6th Department, Research Institute of Chemical Defense (PLA), Beijing 102205, P. R. China
  • Received:2010-04-01 Revised:2010-05-23 Published:2010-09-02
  • Contact: ZHANG Jian-Guo, ZHANG Tong-Lai E-mail:zhangjianguobit@yahoo.com.cn; ztlbit@bit.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20471008) and Programfor NewCentury Excellent Talents in Universities of the Ministry of Education of China (NCET-09-0051).

Abstract:

A novel energetic coordination complex of [Mn(AZT)2(H2O)4] (HTNR)2·4H2O (AZT=3-azido-1,2,4- triazole, HTNR=2,4,6-trinitro resorcinol) was prepared by the reaction between the acidic manganese (II) salt of 2,4,6-trinitro resorcinol and AZT in an aqueous solution. The complex was characterized by elemental analysis and FTIR spectroscopy. The molecular structure was determined by X-ray single crystal diffraction. The crystal belongs to the triclinic systemwith a Pī space group. The central manganese(II) cation has a slightly distorted octahedron feature. Three-dimension networks were formed and the layers are linked by extensive hydrogen bonding. The thermal decompositionmechanismof [Mn(AZT)2(H2O)4] (HTNR)2·4H2O was predicted based on differential scanning calorimetry (DSC) and thermogravimetry-derivative thermogravimetry (TG-DTG) analyses. One endothermic peak and three exothermic peaks are present during the thermal decomposition process with the final residue at 600 ℃being MnO and MnO2. The kinetic parameters of the exothermic process for the complex were studied using Kissinger's and Ozawa- Doyle's methods. Furthermore, impact sensitivity, flame sensitivity, and friction sensitivity tests reveal that the title complex is sensitive and selective towards external stimulants.

Key words: Crystal structure, 3-Azido-1,2,4-triazole, Manganese(II) complex, Sensitivity, Thermal behavior

MSC2000: 

  • O641