Alkali metal-linked triangular building blocks assemble a high-nucleation lanthanoid cluster based on single-molecule magnets.

The metallic central magnetic axes in high-nucleation clusters with complex structural connections tend to be disorganized and cancel each other out. Therefore, high-nucleation clusters cannot easily exhibit single-molecule magnets (SMMs) behaviors. Herein, we select a triple-core building block (DyK, ) and use linked diamagnetic alkali metal to form an open, spherical, high-nucleation cluster DyNa () with SMM behavior. Furthermore, by changing the reaction conditions, DyK () formed by linking two Dy by K(I) is obtained. High-resolution electrospray mass spectrometry of clusters - effectively captures the building block Dy, and clusters and and Dy have high stability even with the increase in ion source energy. To the best of our knowledge, this is the first time that an SMM based on a high-nucleation cluster has been obtained by connecting magnetic primitives via diamagnetic metal ions. DyK is currently the highest nuclear n-4 heterometallic SMM.