SPECTRAL AND ELECTROOPTICAL PROPERTIES OF RING-SUBSTITUTED N-METHYL-N-PHENYLNITRAMINES

Secondary aromatic nitramines absorb in IR at 1517-1536, 1285-1299 and 755-759 cm(-1) irrespective of the nature of an aromatic ring. Compar ison of the H-1 and C-13 NMR spectra of ring substituted N-methyl-N-ph enylnitramines indicate that interaction between the substituents is p oorly transmitted across the ring. alpha-Cleavage observed in the mass spectra of nitramines shows that the Ar-N bond is abnormally weak. Di pole moments of N-methyl-N-phenylnitramines find a simple explanation assuming that the unshared electron pair is shifted towards the aromat ic ring only in the presence of electron demanding substituents in con jugated position. The results are incompatible with the solvent-caged- pair theory of the nitramine rearrangement.