Get access

Energetic Ionic Compounds Based on the 2-Tetrazenium Cation

Authors

  • Carles Miró Sabaté,

    1. Laboratoire Hydrazines et Composés Ènergétiques Polyazotés, UMR 5278/CNRS/UCBL/CNES/SME-SAFRAN, Université Claude Bernard Lyon 1, Bâtiment Berthollet, 3è étage, 22, avenue Gaston Berger, 69622 Villeurbanne, France, Fax: +33-4-72431291
    Search for more papers by this author
  • Erwann Jeanneau,

    1. Centre de Diffractométrie Henri Longchambon, Université Claude Bernard Lyon 1, 43 Bd. du 11 novembre 1918, 69622 Villeurbanne, France, Fax: +33-4-72431160
    Search for more papers by this author
  • Henri Delalu

    1. Laboratoire Hydrazines et Composés Ènergétiques Polyazotés, UMR 5278/CNRS/UCBL/CNES/SME-SAFRAN, Université Claude Bernard Lyon 1, Bâtiment Berthollet, 3è étage, 22, avenue Gaston Berger, 69622 Villeurbanne, France, Fax: +33-4-72431291
    Search for more papers by this author

Abstract

Oxidation of 1,1-dimethylhydrazine leads to the formation of (E)-1,1,4,4-tetramethyl-2-tetrazene (1). Compound 1 undergoes oxidative addition with chloramine (Cl–NH2) to form the (E)-1-aminomethylidene-1,4,4-trimethyl-2-tetrazenium cation (TAT+) as its chloride salt 2. Metathesis reactions of salt 2 with energetic anion-transfer reagents lead to the formation of ionic compounds based on the TAT+ cation and the following anions: nitrate 3, perchlorate 4, 5,5′-azobis(tetrazolate) 6H2O, picrate 6, and azide 7. The water of crystallization in compound 6H2O can be removed to form the anhydrous material 5. All compounds were characterized by analytical and spectroscopic methods, and the solid-state structures of salts 2, 3, 4, 6H2O, and 6 were determined by low-temperature X-ray crystallography. We used preliminary energetic testing to gain insight into the sensitivities of the materials towards impact and friction and we assessed their thermal stability by differential scanning calorimetry (DSC) measurements. Additionally, the heats of formation of the energetic compounds were computed by using quantum mechanical methods (CBS-4M) and these values were used to determine some performance parameters of interest for the pure compounds and for their formulations with an oxidizer. Lastly, we calculated the expected decomposition gases of the pure compounds as well as those of the mixtures with an oxidizer.

Get access to the full text of this article

Ancillary