“Half-sandwich” YbIII single-ion magnets with metallacrowns.

The first “half-sandwich” Yb^III single-ion magnets (SIMs) based on [12-MC_Zn(ii)-4] are reported, in which the central ytterbium ion is coordinated by YbO₈ geometry in D_4d symmetry. The anisotropic barrier is extracted from the analysis of static, dynamic magnetism and emission spectrum offering an insight into the magneto-optical correlation. [ABSTRACT FROM AUTHOR]