Research for new energetic materials with tailored properties is of particular interest in many research groups. In order to meet challenging requirements heterocyclic systems have been investigated. One of the most promising area of research is synthesis of high nitrogen content compounds. Connection of highly endothermic moieties within one molecule attracted attention in recent time. The combination of nitrogen rich tetrazole and tetrazole oxides with oxygen containing furazan and furoxan is a new trend in synthesis of energetic materials with appropriate oxygen balance, high density, and good thermal stability. Various salts have been obtained in order to improve properties in comparison to covalent energetic materials. In this paper results in a recent research for nitrogen rich compounds containing 1,2,5-oxadiazole-tetrazoles species are presented.