Structural study of Ni(dpm)2 in solution by X-ray absorption spectroscopy

The NiK-absorption spectra of Ni(dpm)(2) and its adducts in crystal and solution have been studied. X-ray spectra were recorded on a synchrotron radiation station of the Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences. It is shown that the fundamental absorption maximum in the compounds is of Rydberg character. The fine structure of the fundamental maximum was used for structure elucidation of the nearest environment of the metal atom of the complex in solutions and adducts. Participation of the highest unoccupied AO of the metal in chemical bonding in the compounds is discussed.