Unlocking single molecule magnetism: a supramolecular strategy for isolating neutral Mn III salen-type dimer in crystalline environments.

In [Mn(5-MeOsalen)(Cl)] 2 (dibenzo[24]crown-8), dibenzo[24]crown-8 formed a supramolecule via multi-point interactions with the [Mn(5-MeOsalen)(Cl)] dimer. The dimer was magnetically isolated with S T = 4 and weak interdimer magnetic interactions. The crystal exhibited single-molecule magnet behaviour with an anisotropic barrier of 26(1) K, which is the highest among the Mn-salen series reported to date.