Electronic and structural investigations of technetium compounds by X-ray absorption spectroscopy

Analysis of technetium compounds by X-ray absorption near edge structure spectroscopy enables the determination of the chemical shifts of the technetium K edge. Spectral data reveal the significant correlation between oxidation state and chemical shift. In Tc2(CO)10 multiple scattering along the Tc-C-O vector is more important than the direct Tc..O scattering, as revealed by extended X-ray absorption fine structure (EXAFS) spectroscopy. EXAFS spectroscopic study of TcO2 reveals its distorted rutile structure.