Cation dinitrogen complexes [N2⋯X⋯N2]+, X+=H+, Li+, Na+, Be2+, Mg2+

The complexes of dinitrogen with five cations (H+, Li+, Na+, Be2+ and Mg2+) up to four N2 molecules have been calculated at the MP2/6-311++G(d,p) level. Energetic and geometric aspects have been determined together with absolute shieldings (GIAO). The atoms in molecules methodology has been used to analyze energy, charge and volume of these complexes.