Absorption Spectra of Nitrobenzene Derivatives. I. Spectral Features ofo-,m- andp-Isomers

The intramolecular charge transfer spectra of some nitrobenzene derivatives were measured in n-hexane. The general features of the absorption spectra and the effect of substituents on the absorption spectra were considered from the concept of the intramolecular charge transfer. The migration effect of electron donating groups was discussed for the nitroaniline in aqueous and hydrochloric acidic solutions. Also other absorption due to the n→π* transition of nitro group was considered.