Analysis of lanthanide pi complexes in terms of Voronoi-Dirichlet polyhedra

The structures of 112 rare-earth pi complexes were studied using Voronoi-Di richlet polyhedra. A new method for identification of chemical bonding betw een atoms in organometallic compounds was proposed. The dependence of the a rea of action of a lanthanide atom (Ln) on its nature, coordination number, and oxidation number was investigated. The reasons for the formation of Ln . . .H aghostic contacts were considered within the framework of the geome tric topological method of crystal-chemical analysis employed.