Complexation in the System Paramagnetic Ion (Tm3+)-Diamagnetic Ion (Mg2+)-Carboxylic Acid.

The dependence of the NMR chemical shift in the system containing complexes of a paramagnetic cation PL and PL₂ on the concentration of a diamagnetic salt was simulated. The complexation in the system paramagnetic ion (Tm³⁺)-diamagnetic ion (Mg²⁺)-carboxylic acid (acetic, propionic, n-butyric) was studied experimentally. The effect of the second cation on the calculated complexation constants was detected. [ABSTRACT FROM AUTHOR]