In an effort to produce new examples of single-molecule magnets, we have explored directed assembly routes to high-nuclearity metal-cyanide clusters. The use of multidentate capping ligands has led to the synthesis of a range of star-like and polyhedral species featuring as many as 27 metal centers. Substitution of a variety of transition metal ions into these geometries is shown to permit adjustment of the ground state spin and magnetic anisotropy associated with the molecules. In particular, the use of second- and third-row transition metal ions with a large spin-orbit coupling is found enhance magnetic relaxation barriers. Extension of this approach to the syntheis of cyano-bridged single-chain magnets will also be discussed.

Magnetic metal-cyanide coordination clusters and chains

249th National Meeting (2015)

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