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A VE.SCF.CI. calculation of the excited states of nitramide, N-methyl nitramine, and N,Ndimethyl nitramine has been carried out. The assignments for the latter two have been extended to other unconjugated, primary and secondary aliphatic nitramines. All valence electrons, i.e., 6, x-and %-electrons, except for the oxygen atom 2s lone pairs, were included in the calculation. The necessity of including electrons occupying sigma bonds adjacent to the " chromophore " has been illustrated.

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