電子密度解析と反応性

概要

論文の詳細を見る
The recnt advances in X-ray determination of electron distribution in transition metal complexes are summarized in connection with possible applications of the technique to studies on mechanisms of chemical reactions. The effects of the ligand field symmetry on the d electron distribution were already observed in crystals of CoAl2O4, γ-Fe2SiO4 and FeS2 with the X-ray diffraction method. Using the aspherical scattering factors (ASF) of electrons in 3dyz, 3dxy, 3dz2and 3dx2-y2orbitals, the spin-states of transition metals in KMnF3and KCoF3crystals were determined equivocally. The wave functions for 3d electrons of the Cu atom in Jahn-Teller distorted KCuF3 crystals wese determined with ASF in a good approximation. These successes imply that the X-ray analysis with ASF can be effectively applied to the studies on chemical reactions, such as oxidation-reduction reactions where changes of the spin states are essential and catalytic reactions of transition metals where the spatial relations of the a electron lobes are important, and so on.
日本結晶学会の論文