The ionic salts with super oxidizing ions O(2) (+) and N(5) (+): Potential candidates for high-energy oxidants

As an important component of energetic materials, high-energy oxidant is one of the key materials to improve their energy. The oxidizability of oxidant directly determines the intensity of combustion or explosion reaction. It is generally believed that when the nature of reductant is certain, the stronger the oxidizability, the more intense the reaction. Dioxygenyl cation (O(2) (+)) and pentazenium cation (N(5) (+)) are two kinds of super oxidizing ions, which oxidizability are comparable to that of fluorine. A series of high energetic ionic salts with O(2) (+), N(5) (+) and various anions as active components are designed, and the results show that: 1) Most ionic salts have appropriate thermodynamic stability, high density (up to 2.201 g/cm(3)), high enthalpy of formation (up to 1863.234 kJ/mol) and excellent detonation properties (up to 10.83 km/s, 45.9 GPa); 2) The detonation velocity value of O(2) (nitrotetrazole-N-oxides) and O(2)B(N(3))(4) exceed 10.0 km/s, and the detonation pressure exceed 45.0 GPa because of the O(2) (+) salts have higher crystal density (g/cm(3)) and oxygen balance than that of N(5) (+)salts; 3) With a higher nitrogen content than O(2) (+), the N(5) (+) salts have higher enthalpy of formation, which exceed 330 kJ/mol than that of O(2) (+) salts; 4) The linear spatial structure of N(5) (+) leads the salts to reduce their density. Encouragingly, this study proves that these super oxidizing ions have the potential to become high-energy oxidants, which could be a theoretical reference for the design of new high energetic materials.