ALKOXYDIAZENE N-OXIDES AS HIGH ENERGY SUBSTANCES. SYNTHESIS, PROPERTIES, THERMOCHEMISTRY AND THERMAL STABILITY

摘要

Alkoxydiazene N-oxides R-N(O)=N-O-R' are isomers of nitramines R-N(NO_2)-R', the later ones are used in many kinds of energy materials while alkoxydiazene N-oxides are not used yet because their chemistry was not studied widely. Results of the investigations worked out in the IPCP RAS will be represented in the poster. It was shown that alkoxydiazene N-oxides are usually more stable than corresponding nitramines, their enthalpy of formation is a bit higher (on 6-15 kcal/mol per each N_2O_2 group), the density is usually lower and melting point is higher. Many new alkoxydiazene N-oxides which may be used as high energy compounds (e.g. di(metyl-NON-azoxy)formal - CH_3-N(O) =N-O-CH_2-O-N=N(O)-CH_3) , as a base of high energy polymers (e.g. methoxy-NNO-azoxyethene -CH_2=CH-N(O)=N-O-CH_3) have been synthesized. Because of very high thermal stability alkoxydiazene N-oxides may be used in airbag inflators propellants too. Methods of synthesis of some alkoxydiazene N-oxides, data of the thermal stability, thermochemical data, effectiveness of alkoxydiazene N-oxides as compounds of high energy compositions including smokeless gas-generating compositions with low combustion temperature are described in the presented work.