A potential synthetic route to prepare single-molecule magnets is to employ a family of inorganic compounds called metallacrowns. Metallacrowns (MCs) are often thought of as inorganic analogs of crown-ethers. Metallacrowns have proven to be a useful synthetic pathway in the field of single-molecule magnets for their ability to organize metal ions in a predictable geometry and because they allow for easy modification of synthetic parameters. Here, we present a series of LnX4M(12-MCMnIII(N)shi-4) compounds that were synthesized and magnetically characterized (X = salicylate, acetate, benzoate, trimethylacetate, Ln = GdIII or DyIII, M = NaI or KI). The bridging ligands X, were systematically varied while keeping the remainder of the metallacrown geometry constant. The identity of monovalent cation, necessary for charge balance, was also altered. Magnetic measurements were also collected, revealing that Dy(salicylate)4M 12-MC-4 compounds behaved as single-molecule magnets.

Modifying the bridging anion of LnX4M 12-mettellacrown-4 complexes

253rd National Meeting (2017)

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