Alkali Metals-Based Energetic Coordination Polymers as Promising Primary Explosives: Crystal Structures, Energetic Properties, and Environmental Impact

作者：Sun, Qi; Liu, Yang; Li, Xin; Lu, Ming^*; Lin, Qiuhan^*

来源：Chemistry - A European Journal, 2018, 24(53): 14213-14219.

DOI：10.1002/chem.201802494

• alkali metals
• coordination polymers
• energetic materials
• primary explosives

Coordination polymers (CPs) consisting of alkali metals (Na, K, Rb, and Cs) and a powerful nitrogen- and oxygen-rich energetic ligand (4,4-bis(dinitromethyl)-3,3-bisnitramide-methylene-furazanate, DBMF2-) were developed. Molecular structures of these CPs, confirmed by single-crystal X-ray diffraction analysis, indicated that the same ligand takes on a U-shaped state for Na and an N-shaped state for K, Rb, and Cs. Explosion tests demonstrated that both Na2DBMF and K2DBMF efficiently detonated the secondary explosive RDX. This indicates that they are both effective primary explosives. K2DBMF exhibits better calculated detonation performance (D: 8227ms(-1); P: 32.5GPa) than the primary explosive Pb(N-3)(2). In addition, toxicity tests and evaluation of their decomposition products reveal their low impact on the environment. Both experimental results and theoretical analyses indicate that the combination of alkali metals and a powerful energetic ligand can stimulate the development of primary explosives.

• 出版日期2018-9-20
• 单位南京理工大学