Abstract
Abstract. Studies of structure-reactivity relations were carried out in solvent extraction and coordination chemistry of metal ions Mz+ {Na(I), Mg(II), Ca(II), Sr(II), Ba(II), Ln(III) (Sc, Y, La...Lu), Hf(IV), Fe(II), Co(II), Ni(II), Pd(II), Cu(II), Ag(I), Au(III), Zn(II), Cd(II), Hg(II), Tl(I), Pb(II), and Bi(III)} with 38 bi- and tridentate μ-imido organophosphorus compounds with oxygen and sulfur donor atoms. These compounds are Bronsted acids, HA, and form chelate complexes MAz in most cases. Different modes of coordination are observed. The extraction of metal ions depends not on only on the set of donor atoms, and the acidity and dimerization constant of the organophosphorus compound. In some cases steric effects are dominant. It was also observed an important influence of the diluent.
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