THE INFRARED SPECTRA OF ORGANO-PHOSPHORUS COMPOUNDS: II. THE 1–2.6 μ REGION

Abstract

The application of near infrared spectra to the study of phosphorus compounds has been investigated. It has been found that each type of radical gives a characteristic set of bands, which are not appreciably affected by changes in the molecule more than two atoms distant. Characteristic group frequencies are given for MeO, EtO, n-PrO, i-PrO, n-BuO, Me, Et, Me2N, Et2N, and i-Pr2N groups attached to phosphorus. Only the MeP bands are noticeably altered by the nature of the substitution on the phosphorus atom. Qualitative predictions of the spectra of compounds containing more than one type of C—H group may be made by summing the contributions of the components.