RELATIONSHIP BETWEEN PHYSICOCHEMICAL PARAMETERS OF ALPHA-AMINO-ACIDS AND THOSE OF THE CHLORINATED SOLVENTS IN THE CASE OF THE L L PARTITIONAS SUPRAMOLECULAR COMPLEXES/

In order to explain the dependence of the distribution coefficient (D) between water and three different chlorinated solvents (methylene chl oride, chloroform and 1,2-dichloroethane) of some alpha-amino acids (l eucine, tryptophane, phenylalanine, methionine, valine and isoleucine) , as supramolecular complexes of [EC...R-CH-(NH3)-COOH](+)A- type, (EC = 18-C-6; A- = the anion originated in tropaeoline 00), a correlation was established by means of a multilinear regression analysis perform ed between different characteristics of the alpha-amino acids and thos e of the solvents involved. This study evidenced a good correlation (r > 0.81) between some of the characteristics of alpha-amino acids (pi, pH(i), pKa(2)), and of the solvent (Sigma beta(2)(H), pi(2)(H), R-2(H ) or Sigma alpha(2)(H)), just mentioned.