By the method of ion exchange on the exchanger Dowex 50 WX 8 100-200 mesh complex formation was investigated in the system Me(ClO₄)₃ + XC₆H₄OH + HClO₄ + NaClO₄ + H₂O, with Me = Fe(III) or Al(III) and X = Cl, Br, CH₃, NO₂. It was proved that 1:1 complexes are formed between Me(III) and a phenol molecule. Stability constants of the complexes were determined and related with Hammett’s sigma constants.
A new method of chromatographic paper separation of a mixture of ions Fe(III), Cr(III) and Al(III) has been elaborated with the use of differences of complexogenic properties of violet R in respect of the particular ions.
The method were elaborated for the preparation of [Cr(CH₃CONHCSNH₂)₃] (ClO₄)₃. In this paper we give conditions for the synthesis, composition, properties and propose the structure of the obtained compound.
Praca została nadesłana na III polsko-radzieckie sympozjum "Termodynamika i elektrochemia roztworów elektrolitów".
EN
The interaction between Co(II) ions and thiolactic acid TLA or thioglycolic acid TGA in aqueous 0.1 M NaClO₄ has been studied potentiometrically at 20°. The formation of complexes of the type Co(SRC00) and Co(SRC00)²⁻₂ (where R - CH₂ or CH₃CH) has been found. The stability constants of these complexes have been determined as well as the acid dissociation constants of TLA and TGA. Thiolactic acid and thioglycolic acid, belong to a physiologically important class of compounds. As they behave as strong complexing agents, it seemed to be interesting to comparise the stabilities of Co(II) complexes with these acids.
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.