Self-Assembly Synthesis of a [2]Catenane CoII Single-Molecule Magnet.

We describe herein the self-assembly synthesis of an octanuclear CoII [2]catenane {[Co4 (H2 L)6 ]2 16+ } formed by the mechanical interlocking of two {[Co4 (H2 L)6 ]8+ } rectangles of unprecedented topology. Subtle manipulation of the synthetic conditions allows the isolation of a mixed-valence [Co2 III /Co2 II ]10+ non-catenated rectangle. The CoII centers in the [2]catenane exhibit slow relaxation of their magnetic moment, i. e. single-molecule magnet properties, dominated by quantum tunneling and Raman relaxation processes. This work shows that metallo-supramolecular chemistry can precisely control the organization of single-molecule magnets in topologically complex arrangements. © 2021 Wiley-VCH GmbH.

Citation

Benjamin H Wilson, Jas S Ward, David C Young, Jun-Liang Liu, Corine Mathonière, Rodolphe Clérac, Paul E Kruger. Self-Assembly Synthesis of a [2]Catenane CoII Single-Molecule Magnet. Angewandte Chemie (International ed. in English). 2022 Jan 21;61(4):e202113837

PMID: 34780082

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