Photochromism of Complexes of Spirooxasine Molecules with Magnesium and Terbium Ions

A spectral–kinetic study of the processes of complexation of molecules of photochromic spirooxazines containing electron–donor and electron-withdrawing substituents in the oxazine fragment with magnesium and terbium cations is carried out. The dependence of the photochromic properties and the mechanism of complexation on the structure of photochromic compounds is established.