The basis of single-stage synthesis of complexonates without educing complexones from the reactionary medium was devised as the templete synthesis on the matrix, being a metal ion. In the initial system M + en + mal, the changeable parameter is the 3d metal cation. For definition of a path of single-stage synthesis of complexonates, the affinity of the metal ion to initial reactants was considered within the method of rigid acids and bases. It is shown that, for <$E roman Fe sup 3+> and <$E roman Mn sup 2+>, the interaction is realized predominantly with en, but with mal for <$E roman Zn sup 2+> and <$E roman Cu sup 2+>. The final products of single-stage synthesis are metal helates of ethylenediamine-<$E roman {N, N prime}>-disuccinic acid which have the same properties as those obtained by the two-stage technology, i.e., the templete synthesis of complexonates M edds is realized in the presence of a metal cation both with empty and filled 3d shells.

• Трунова Олена Костянтинівна (хімічні науки)

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