The influence of lower energy levels on the first adiabatic ionization potentials of molecules of nitrogen-containing compounds

The authors have discovered a correlation between empirically defined first adiabatic ionization potentials and the lower energy levels in molecules of nitrogen-containing organic compounds. The calculation has been performed by ab initio method RHF-3-21G **. This dependence is observed in nitrogenous compounds of various classes and is related to the exchange and the Coulomb interactions. The results obtained have been confirmed by statistical data processing.