Role of the topology of molecular orbitals in determining cluster structure

Applicability boundaries of models proposed for explanation of cluster chemical bonds nature, reactivity and other properties are analyzed and determined. The conclusion is made that the model of tensor surface harmonics if the most suitable and substantiated one for description of cluster electronic and geometrical structure. Application of this model to a wide range of clusters such as BnHn2- borohydrides, metalorganic and halide clusters MnLk of transition metals and others is considered. 124 refs.; 8 figs.; 7 tabs