Intermolecular interactions in solutions of some amino-nitro-benzenederivatives, studied by spectral means

摘要

The spectral shifts in the visible electronic absorption spectra of three amino-nitro-benzene derivatives indifferent solvents were correlated with the macroscopic parameters (refractive index and electric permit-tivity) of the solvents. The wavenumbers in the maximum of the visible charge transfer absorption bandof o-nitro-aniline, 4-amino-3-nitrophenol and 3-amino-4-nitrophenol depend linearly on the Baur-Nicolfunction of electric permittivity. This dependence allows to estimate the electric polarizability in the elec-tronic excited states if the electric polarizability in the ground state of the spectrally active molecule isdetermined by other procedures, such as by quanto-mechanical calculations.