Electronic and infrared spectral band shifts in binary solvent mixtures

A systematic study on the electronic and infrared spectral band shifts of a variety of solutes in binary solvent mixtures has been carried out. Similar to the behaviour of proton shifts and spectral intensities of solutes in binary solvent mixtures the band shifts are also found to obey the relationship Δν = KΔν°Cp/(1 + KCp) where Δν is the band shift of a solute in binary solvent mixture containing Cp moles of perturbing solvent with respect to its band position in an inert solvent, K and Δν° are constants for the system under consideration. An attempt has been made to give an explanation for the relationship. © 1974.