Study on a novel energetic cocrystal of TNT/TNB

被引:80
|
作者
Guo, Changyan [1 ,2 ]
Zhang, Haobin [2 ]
Wang, Xiaochuan [2 ]
Liu, Xiaofeng [2 ]
Sun, Jie [2 ]
机构
[1] SW Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China
[2] China Acad Engn Phys, Inst Chem Mat, Mianyang 621900, Sichuan, Peoples R China
基金
美国国家科学基金会;
关键词
CRYSTAL;
D O I
10.1007/s10853-012-6881-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A new energetic cocrystal of TNT/TNB was obtained by evaporating ethanol at room temperature over a period of 3 days. It is found that the donor-acceptor pi-pi interaction, p-pi interaction, and C-H center dot center dot center dot O hydrogen bond interaction are dominant in the formation of the cocrystal. In this work, physicochemical characteristics of cocrystal have also been studied using several methods: Optical Microscopy, Powder X-ray Diffraction, Single Crystal X-ray Diffraction and differential scanning calorimetry. It is shown that TNT and TNB molecules cocrystallize in a monoclinic system with space group P2(1)/c and cell parameters a = 20.4570(8) angstrom, b = 6.1222(2) angstrom, c = 15.1635(6) angstrom, beta = 110.091(4)degrees, and Z = 4. The cocrystal has a crystal density of 1.640 g cm(-3) and H-50 (50 % explosion characteristics of drop height) of 112.2 cm, which is higher than that of TNT (100 cm), TNB (77.8 cm) and most of the other explosives. The result shows that cocrystallization may help to improve the performance of TNT and TNB.
引用
收藏
页码:1351 / 1357
页数:7
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