N62+ and N42+ Dications and Their N12 and N10 Azido Derivatives: DFT/GIAO-MP2 Theoretical Studies1

Abstract
The structures and energies of N62+ and N42+ were calculated by using the density functional theory method at the B3LYP/cc-aug-pVTZ level. The C2h symmetric form 1 and Dh form 5 were found to be the stable minima for N62+ and N42+, respectively. Dissociation of 1 into 5 and N2 was computed to be endothermic by 25.1 kcal/mol. 15N NMR chemical shifts and vibrational frequencies of 1 and 5 were also calculated. Interactions of 1 and 5 with azide ions were also probed representing N12 and N10.