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 (Tm^{3 +})-diamagnetic ion (Mg^{2 +})-carboxylic acid (acetic, propionic, n-butyric) was studied experimentally. The effect of the second cation on the calculated complexation constants was detected.