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Updated: Jun 2, 2026

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
Published on: February 5, 2022
Rational design of covalently bridged [Fe(III)₂M(II)O] clusters
Pablo Alborés1, Eva Rentschler
1Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany. albores@qi.fcen.uba.ar
Abstract:
We are reporting the first supramolecular dimeric units of basic carboxylates. The neutral [Fe(III)₂M(II)O] motif for different 3d M metals is covalently bound through 2,2'-bipyrimidine. We have structurally characterized the hexanuclear clusters and the related trinuclear building blocks. Their magnetic properties have been fully analyzed and DFT calculations have been performed as a supplementary tool. All results evidence a weak antiferromagnetic interaction through the bpym bridge between isolated spin ground states (in some examples) arising from intra-Fe₂MO core exchange couplings.
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