Application of the two-dimensional multiple selective excitation (2D MSE) method for studying processes of molecular dynamics

The problem of identifying mechanisms, which underlie the structural flexib ility of the cadmium(II) and lead(II) bis(chelate) complexes, is adequately solved by a two-dimensional exchange experiment of multiple selective exci tation. In addition to topomerisation of the coordination polyhedron, it in volves reactions accompanied by a break of the metal-ligand bonds according to the associative mechanism of the degenerate ligand exchange. The latter was found for the first time in the plane tricyclic Cd-111(II) and (207)pb (II) complexes on the basis of aminoenthione(selenone)ic ligands.