Magnetostructural correlation for the Gd complexes with bridging oxygen

The dependence between the energy of magnetic exchange interaction JGd-Gd′ and the distance between gadolinium atoms in the binuclear structure DGd...Gd′ was constructed on the basis of our and literature experimental data for 34 gadolinium complexes with the [Gd2O2] core. The character of the established dependence is similar to the Bethe-Slater curve. The obtained correlation indicates the possibility to predict the character of interaction in the Gd complexes built of binuclear fragments with the [Gd2O2] core depending on the single parameter, namely, distance DGd...Gd′. The validity of this correlation was tested using as examples four binuclear gadolinium complexes obtained by the authors.