Enthalpy stabilization of some complex oxides

Using approximated method of calculation, based on the account of enthalpies of cation coordination number changes in oxygen surrounding, formation enthalpies of some complex oxides from simple ones were calculated. Enthalpy stabilization of coordination complex oxides, as regards simple oxides, in many cases is determined by exothermal effects of coordination number change of large ions of alkaline earth metals and lanthanum. 18 refs., 1 fig., 1 tab