A theoretical investigation of the N2O3− anion isomers

The structures, binding energies and vibrational frequencies of various N2O3− structural isomers have been determined using the B3LYP and MP2 methods. Three NO2−–NO complexes with different coordinations and one N2O–O2− complex are found to be minima on the potential energy surface. The three NO2−–NO complexes and the N2O–O2− complex are predicted to be stable with respect to NO2−+NO and N2O+O2−, respectively.