Solvents effect on infrared spectra of trimethyl phosphate in organic solvents

Abstract

Infrared spectroscopy studies of trimethyl phosphate (TMP) in 17 different pure organic solvents were undertaken to investigate the solvent-solute interactions and to correlate solvent properties such as the Kirkwood-Bauer-Magat (KBM) equation, the solvent acceptor number (AN) and the linear solvation energy relationships (LSER), respectively, with the infrared band shift. Poor correlation between dielectric constants and the frequencies showed that the KBM relationship was unsuitable for the investigated molecules. These frequencies exhibited a better correlation with the LSER than the solvent AN.