Intramolecular spin state switching mechanisms of transition metal complexes

The principal molecular mechanisms that control spin state switching rearrangements of transition metal complexes are considered. A new approach to the structural design of valence tautomeric compounds involving the formation of adducts of four-coordinate metal complexes with bidentate redox-active ligands is proposed. By means of theoretical modeling methods, new molecular systems with photo-switchable magnetic properties based on transition metal complexes with photochromic ligands are suggested.