[en] The example of halogenouranates of alkali metals is used to make ginetic series of complex groupings. The dependence of coordination enthalpy on the number of coordinated anions is considered. The dependence is described by the curve with the minimUm in once coordinated complexes. Minimum depth equals the average binding energy in the molecule of binary halide. When coordination mUltiplicity is less than 1 the dependence deviates considerably from linear to the side of exo-effect. The energy of intraspheric bonds is maximUm if coordination multiplicity is 1/2. As an example of practical application of the found dependence, stabilization factors of unstable valent states by bindina the element in the anion complex, are discussed. It is shown that for valency stabilization once coordinated complexes shoUld be used