Collect. Czech. Chem. Commun. 1996, 61, 155-159

Effect of Medium on the Electronic Spectra of 2-Nitroaniline Derivatives

Vojtěch Bekárek, Jan Jílek and Antonín Haviger

Department of Analytical and Organic Chemistry, Palacký University, 771 46 Olomouc, Czech Republic


The wavenumbers of the long-wavelength absorption band were measured for nine 4-substituted and 5-substituted derivatives of 2-nitroaniline in the gaseous state and in 13 solvents where only nonspecific solvent-solute interactions can be expected. For the series involving all the solvents used, the solvent effects can be well expressed by an one-parameter equation involving the product of the Born functions of the relative permittivity and of the refractive index of the solvent. For the series involving the nonpolar solvents and the gaseous state only, this equation reduces to an one-parameter equation involving the refractive index Born function squared.

Keywords: Solvent effect; Electronic spectra; 2-Nitroanilines.