Syntheses and Thermal Behaviors of Rb(FOX-7)¡¤H2O and Cs(FOX-7)¡¤H2O

Bulletin of the Korean chemical society

Kangzhen Xu¹  Fengqi Zhao¹  Jirong Song¹  Xiaolei Ren¹  Jinan Luo¹  Min Wang¹  Yongshun Chen¹ 

关键词: 1;    1-Diamino-2;    2-dinitroethylene (FOX-7);    Rubidium salt;    Cesium salt;    Thermal behavior;    Specific heat capacity;    Adiabatic time-to-explosion;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Two new energetic organic alkali metal salts, 1,1-diamino-2,2-dinitroethylene rubidium salt [Rb(FOX-7)·H₂O] and 1,1- diamino-2,2-dinitroethylene cesium salt [Cs(FOX-7)·H₂O], were synthesized by reacting of 1,1-diamino-2,2-dinitroethylene (FOX-7) and rubidium chloride or cesium chloride in alkali methanol aqueous solution, respectively. The thermal behaviors of Rb(FOX-7)·H₂O and Cs(FOX-7)·H₂O were studied with DSC and TG methods. The critical temperatures of thermal explosion of the two compounds are 216.22 and 223.73 ^oC, respectively. Specific heat capacities of the two compounds were determined with a micro-DSC method, and the molar heat capacities are 217.46 and 199.47 J mol^-1 K^-1 at 298.15 K, respectively. The adiabatic times-to-explosion were also calculated to be a certain value of 5.81 - 6.36 s for Rb(FOX-7)·H₂O, and 9.92 - 10.54 s for Cs(FOX-7)·H₂O. After FOX-7 becoming alkali metal salts, thermal decomposition temperatures of the compounds heighten with the rise of element period, but thermal decomposition processes become intense.

【 授权许可】

Unknown