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Issue 10, 2009
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Alkali and transition metal (Ag, Cu) salts of bridged 5-nitrotetrazole derivatives for energetic applications

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Abstract

A family of energetic salts based on the novel 5-(5-nitrotetrazole-2-ylmethyl)-tetrazolate anion (NTTz) with alkali metals (Li+6, Na+7, K+8, Rb+9 and Cs+10) were synthesized by the reaction of the free acid 5-(5-nitrotetrazole-2-ylmethyl)-tetrazole with a suitable alkali metal base (bicarbonate or carbonate) in alcohol or water. The sodium salt (7) was, in turn, used to form salts containing the NTTz anion and Ag+ (11) or Cu2+ (12, 13a and 13b) cations. The new compounds were characterized by IR, Raman and NMR spectroscopy, mass spectroscopy, elemental analysis and differential scanning calorimetry (DSC). In addition, the solid-state structure of the NTTz anion was determined by diffraction methods using X-ray analysis. We also assessed the energetic properties of the compounds using standardized (BAM) tests. Interestingly, the silver and copper salts are easily and safely initiated by the laser beam generated by a Raman machine and some of the compounds reported here have promising properties for applications as a new class of nitrogen-rich, more environmentally-friendly energetic materials.

Graphical abstract: Alkali and transition metal (Ag, Cu) salts of bridged 5-nitrotetrazole derivatives for energetic applications

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Publication details

The article was received on 21 Oct 2008, accepted on 19 Dec 2008 and first published on 27 Jan 2009


Article type: Paper
DOI: 10.1039/B818531J
Dalton Trans., 2009, 1825-1834

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    Alkali and transition metal (Ag, Cu) salts of bridged 5-nitrotetrazole derivatives for energetic applications

    T. M. Klapötke, C. M. Sabaté and M. Rasp, Dalton Trans., 2009, 1825
    DOI: 10.1039/B818531J

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