INFRARED-SPECTRA, DYNAMIC AND ELECTROOPTICAL PARAMETERS OF AMINOGROUPOF SUBSTITUTED ANILINES IN H-BONDED 1 1 COMPLEXES/

Infrared spectra of free molecules of 4-nitroaniline, 2-chloro- and 2, 6-dichloro-4-nitroanilines and their H-bonded complexes (1:1) with ace tonitrile, dimethylformamide, dimethylsulphoxide and hexamethylphospho rtriamide have been investigated in spectral region of aminogroup stre tching vibrations in CCl4 medium. Spectral characteristics of absorbti on bands of monomers and spectral moments of absorbtion bands of H-bon ded complexes have been determined. Vibrational and electrooptical pro blems for free and bonded molecules were solved within the framework o f R-NH2 model having regard to dynamic and electrooptical nonequivalen cy of aminogroup NH-bonds. Valent angles gamma(HNH), force constants o f bonds K(NH), electrooptical parameters of aminogroup partial derivat ive mu/partial derivative q and partial derivative mu/partial derivati ve q' and constants of equilibrium monomer-complex have been calculate d. The influence of substituents in aniline aromatic ring and proton a ccepting molecules on static and dynamic polarization of aminogroup ha s been considered. The correlation between spectral, geometrical, dyna mic and electrooptical characteristics of studied nitroanilines aminog roups have been derived.