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Published June 20, 2016 | Accepted Version + Supplemental Material
Journal Article Open

Effect of the Mn Oxidation State on Single-Molecule-Magnet Properties: Mnᴵᴵᴵ vs Mnᴵⱽ in Biologically Inspired DyMn₃O₄ Cubanes

Abstract

Inspired by the ferromagnetic coupling in the cubane model CaMnᴵⱽ₃O₄ of the oxygen-evolving complex of photosystem II, 3d–4f mixed-metal DyMn₃O₄ clusters were prepared for investigation of the magnetic properties. For comparison, YMnᴵⱽ₃O₄ and YMnᴵⱽ₂MnᴵᴵᴵO₄ clusters were investigated as well and showed ferromagnetic interactions, like the calcium analogue. DyMnᴵⱽ₃O₄ displays single-molecule-magnet properties, while the one-electron-reduced species (DyMnᴵⱽ₂MnᴵᴵᴵO₄) does not, despite the presence of a Mnᴵᴵᴵ center with higher spin and single-ion anisotropy.

Additional Information

© 2016 American Chemical Society. Received: March 15, 2016. Publication Date (Web): June 9, 2016. We thank Caltech, the NIH (Grant R01 GM102687A), and a Sandia Campus Executive Fellowship (to E.Y.T.) for financial support. T.A. is grateful for Sloan, Cottrell, and Dreyfus scholarships. We also thank R. Holmberg for Magellan analysis. The authors declare no competing financial interest.

Attached Files

Accepted Version - nihms868559.pdf

Supplemental Material - ic6b00630_si_001.cif

Supplemental Material - ic6b00630_si_002.cif

Supplemental Material - ic6b00630_si_003.cif

Supplemental Material - ic6b00630_si_004.pdf

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August 20, 2023
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