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Alkali Metal Salts of 3,6-Dinitramino- 1,2,4,5-tetrazine:Promising Nitrogen Rich Energetic Materials

Abstract

The alkali metal salts of 3,6-dinitramino-1,2,4,5-tetrazine (DNAT, 1), Li2(H2O)4(DNAT) (2), Na2(H2O)3(DNAT) (3), K2(H2O)(DNAT) (4), Rb2(DNAT) (5) and Cs2(DNAT) (6) were synthesized and characterized by elemental analysis, IR spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and single-crystal X-ray diffraction. All of these alkali metal salts possess higher thermal stability (from 240.9 oC to 260.0 oC) than that of DNAT substrate (108.3 oC), due to their plenty of coordination bonds and the three-dimensional network structures of the complexes. The number of coordination water molecules, the atomic radius of metal and the different packing forms of crystal structure make contribution to the different thermal stabilities of the alkali metal salts. The experimental (constant-volume) energy of combustion ranges from 1331 to 1531 kJ mol-1. The compounds 1,4,5,6 are sensitive to impact and friction.

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Publication details

The article was received on 25 Oct 2018, accepted on 07 Dec 2018 and first published on 08 Dec 2018


Article type: Paper
DOI: 10.1039/C8CE01827H
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Alkali Metal Salts of 3,6-Dinitramino- 1,2,4,5-tetrazine:Promising Nitrogen Rich Energetic Materials

    T. Zhang, J. Du, Z. Li, X. Lin, L. Wang, L. Yang and T. Zhang, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01827H

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