Аннотация:The formation of Cu(II) complexes with (aminoalkyl)phosphonic acids H2NCR1R2P(O)(OH)(OR3) (R1 = Me, R2 = Et, Ph, R3 = H; R1 = R3 = H, R2 = Ph; R1 = Me, R2 = R3 = Et) and 16 amino acids was studied by potentiometric titrn. at 25В°. The 3 components were in a 1:1:1 ratio of initial concns. The stability (log ОІ) of the mixed-ligand complexes and the shift in the equil. toward their formation (О” log k) increase with increase in hydrophobic nature of the ligand.