STUDIES ON THE SOLVATOCHROMISM OF FE(CN)(2)(PHEN)(2)

The influence of organic solvents on the electronic spectra of Fe(CN)( 2)(phen)(2) has been investigated by trichromatic colorimetry. The col or parameters of these solutions have been calculated on the basis of the absorption spectra and are described in the CIE and CIELAB color s paces. It has been shown that one of the parameters (the so-called hue angle) could be related to some acidity parameters of solvents. Thus, it is possible to calculate the hue angle and, therefore, to predict the color of solution if the solvent acceptor number is known, or vice versa.