The Synthesis And Characterization Of Energetic Ionic Compounds Containing Nitroimino Groups

Aminotetrazoles are an interesting class of heterocycles that exhibit an unusually wide range of applications such as high energy density materials (HEDM). Tetrazole compounds containing nitroimino groups have been investigated intensively as energetic materials both theoretically and experimentally, as the nitroimino group can offer improved density and oxygen balance, and a high heat of formation. Energetic ionic compounds in which both the cation and the anion are high-nitrogen species, are among the most recent and exciting developments of HEDMs, continuing to attract considerable work.In this thesis, 1-methyl-5-nitriminotetrazolate and ethylene-bridged bis(nitroiminotetra-zolate) salts were synthesized by the processes of cyclization, nitration and deprotonation, using cyanogen azide and primary amine(methylamine or ethylenediamine) as starting materials. And some experimental conditions were investigated and discussed.3,6-bis(1H-1,2,3,4-tetrazole-1,5-diamine)-1,2,4,5-tetrazine was prepared according to the same method, cyanogen azide and 3,6-dihydrazino-1,2,4,5-tetrazine were used as starting materials. Some experimental conditions, such as molar ratio of reactants, reaction time were studied.Besides, a straightforward way for the preparation of the energetic aminotetrazolium salts is reported, using aminotetrazolium nitrate and ammonium nitroiminotetrazolate as starting materials. All salts were readily synthesized in water under mild conditions.