Absorption spectra and ligand field parameters of tetragonal 3d-transition metal fluorides.- Structure and bonding in inorganic derivatives of ?-diketones.- The electronic spectra of the hexafluoro complexes of the first transition series.- Iron(II) diimine and related complexes.- The nephelauxetic effect calculation and accuracy of the interelectronic repulsion parameters I. Cubic high-spin d 2, d 3, d 7, and d 8 systems.- The ab-initio calculation of molecular vibrational frequencies and force constants.