Supramolecular 3d–4f single-molecule magnet architectures†
Abstract
The nanosized self-assemblies {[{LnIII}{H2O⊂CrIII3LnIII6}]2(H2O)} (Ln = Dy, 1 and Tb, 2) based on new 3d–4f mixed-metal coordination topologies are formed via extensive intramolecular hydrogen bonding that is directed by enclosed water molecules. Compounds 1 and 2 show single-molecule magnet characteristics manifested by hysteresis loops up to 1.6 K (Ueff = 8.3 cm−1) and 1 K (Ueff = 3.4 cm−1), respectively.