Thermal Behavior of 2-(Dinitromethylene)-1,3-diazacyclopentane

✍ Scribed by Kangzhen Xu; Xiaolei Ren; Jirong Song; Fengqi Zhao; Li Ding; Jianhua Yi; Yaoyu Wang

• Book ID: 102101655
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 152 KB
• Volume: 27
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.200990320

✦ Synopsis

Abstract

A new compound, 2‐(dinitromethylene)‐1,3‐diazacyclopentane (DNDZ), was prepared by the reaction of 1,1‐diamino‐2,2‐dinitroethylene (FOX‐7) with 1,2‐diaminoethane in N‐methylpyrrolidone (NMP). Thermal decomposition of DNDZ was studied under non‐isothermal conditions by DSC, TG/DTG methods, and the enthalpy, apparent activation energy and pre‐exponential factor of the exothermic decomposition reaction were obtained as 317.13 kJ·mol^−1^, 269.7 kJ·mol^−1^ and 10^24.51^ s^−1^, respectively. The critical temperature of thermal explosion was 261.04°C. Specific heat capacity of DNDZ was determined with a micro‐DSC method and a theoretical calculation method, and the molar heat capacity was 205.41 J·mol^−1^·K^−1^ at 298.15 K. Adiabatic time‐to‐explosion was calculated to be a certain value between 263–289 s. DNDZ has higher thermal stability than FOX‐7.