Electrical and Optical Properties of the Nitramine Group and Molecular Structure of Some N-Nitramines

摘要

The electrical and optical properties (dipole moment, electrooptical and optical Kerr constants, molecular polarizability anisotropy, polarizability tensor, molecular refraction) of N,N-dimethylnitramine as the simplest N-NO_2 derivative were studied by a set of experimental and theoretical methods with the aim to determine the components of the polarizability ellipsoid of the N-NO_2 group and develop a valence-optical scheme for calculating the ooptical and electroooptical parameters of N-NO_2 compounds. Conjugation of the p electrons of the imide nitrogen atom with the #pi# electrons of the nitro group results in deviation of the properties of N,N-dimethylnitramine from the additive values. Comparative evaluation of the parameters of the C_sp~3 -NO_2, C_sp~2-NO_2, and N-NO_2 groups was made.