ELECTRONIC ABSORPTION-SPECTRA OF CHROMYL COMPOUNDS

Electornic absorption spectra of pseudotetrahedral CrO2X2 compounds. (where X denotes Cl-, CH3COO- and BO2-) in some organic solvents have been studied. The spectral contours of chloride and borate compounds exhibit vibrational fine structure connected with the OCrO chromophore, while the spectral contour of chromyl acetate is almost structureless. A detailed computer aided interpretation of the solution spectra has been carried out including spectral contour processing by digital filtering, curve fitting procedure and Franck-Condon analysis. The oscillation wavenumbers and anharmonicity of the progressions are very close to that of chromyl chloride in vapor phase. © 1990.