A new technique is proposed for the spectrophotometric determination of protonation constants, especially adequate for mixed, water organic solvents. The formation of mixed complexes: Co(8AQ)2(SCN)2, Ni(8AQ)2(SCN)2 and Pd(8AQ)I2 is used for gravimetric determination of these metallic ions. The protonation constants of 8-aminoquinoline and its 5,7-di-halogen derivatives have been determined. © 1983 Springer-Verlag.
|Publication status||Published - 1 Jan 1983|