Giant Single‐Molecule Magnets: A {Mn 84 } Torus and Its Supramolecular Nanotubes

A meeting of two magnetic worlds: The giant (ca. 4.2 nm) {Mn84} cluster, shown, has a torus structure and is a single-molecule magnet (SMM). It represents a meeting of the molecular (bottom-up) and classical (top-down) approaches to nanoscale magnetic materials, and it crystallizes as nanotubular stacks. The discovery that individual molecules can function as magnets provided a new, “bottom-up” approach to nanoscale magnetic materials,1–3 and such molecules have since been called single-molecule magnets (SMMs).4 Each molecule is a single-domain magnetic particle that, below its blocking temperature, exhibits the classical macroscale property of a magnet, namely magnetization hysteresis. In addition, SMMs…

• NS
  National Science Foundation

  Award: 0123603
• DO
  Division of Chemistry