Infrared and multinuclear magnetic resonance spectroscopy (NMR) studies of trimethyl phosphate in 24 different solvents were undertaken to investigate the solute-solvent interactions and to correlate solvent properties such as acceptor number and dielectric constant with the infrared band shift and the 13C and 31P NMR chemical shifts. Furthermore the cross-correlation between the infrared and NMR shifts in different solvents was studied. The results demonstrate that in general there is a correlation between IR and NMR shifts: the infrared, 13C and 31P shifts can be predicted for most solvents used in this study, if one of them is known.