Abstract
The combined use of 1,1,1-tris(hydroxymethyl)ethane (thmeH3) and azides in Mn carboxylate chemistry has yielded a new family of decanuclear [Mn6Na4O(N3)(O2CR)5(thme)4(H2O)4] (R = Me (1); Et (2)) complexes consisting of mixed-valence Mn 2 II Mn 4 III units with a very rare [Mn6(μ6-O)]14+ octahedral core contained within a tetrahedron of four NaI atoms. The [Mn6Na4] units of 1 and 2 are connected via the Na atoms to neighboring units, giving 3-D supramolecular assemblies with large channel cavities. Variable-temperature, solid-state dc and ac magnetization studies carried out in the 1.8–300 K range reveal that the Mn6 units of 1 and 2 are antiferromagnetically coupled to give S = 0 ground states for both complexes.
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