INVESTIGATION OF SOME PROPERTIES OF MULTICENTER BOND INDEXES

Various recently introduced multicenter bond indices were reviewed and their interrelations discussed. In addition to this analysis a simple three-center three-orbital model of three-center bonding was proposed and applied to several molecules with three-center bonds. The applica bility of this model was tested by comparing with semiempirically and nb-initio calculated bond indices. It was shown that the simple model correctly describes the phenomenon of three-center bonding. Another in teresting and useful application of this model concerns the interpreta tion of the indices as an indicator of the number of electrons involve d in three-center bonding (3c-2e vs 3c-4e bonds).