Seifried, M., Kapsamer, F. M., Reissner, M., Welch, J. M., Giester, G., Müller, D., & Weinberger, P. (2022). Solvothermal One-Pot Synthesis of a New Family of Chiral [Fe₄O₄]-Cubane Clusters with Redox Active Cores. Magnetochemistry, 8(9), Article 95. https://doi.org/10.3390/magnetochemistry8090095
E163 - Institut für Angewandte Synthesechemie E138 - Institut für Festkörperphysik E057-14-2 - Fachgruppe Center for Labelling and Isotope Production (CLIP)
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Journal:
Magnetochemistry
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ISSN:
2312-7481
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Date (published):
Sep-2022
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Number of Pages:
14
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Publisher:
MDPI
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Peer reviewed:
Yes
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Keywords:
electrochemistry; imidazoles; magnetic properties; [Fe₄O₄]-cubane core cluster
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Abstract:
The two achiral ligands tris(1-methyl-1H-imidazol-2-yl)methanol ((mim)₃COH) and bis(1-methyl-1H-imidazol-2-yl)(3-methylpyridin-2-yl)methanol ((mim)₂(mpy)COH) form on reaction with Fe(BF₄)₂ ∙ 6 H₂O, the octahedral low-spin complexes [Fe((mim)₃COH)₂](BF₄)₂ ∙ MeCN (1) and [Fe((mim)₂(mpy)COH)₂](BF₄)₂ ∙ 0.5 MeCN (2). Both octahedral complexes immediately rearrange to the chiral [Fe₄O₄]-cubane clusters [Fe₄(mim)₃CO)₄](BF₄)₄ (3) and [Fe₄(mim)₃CO)₄](BF₄)₄∙CHCl₃ (4), whereas the highly symmetrical (3) crystallizes as racemate, (4) resolves based on the asymmetry introduced by the 2-methylpyridine moiety and crystallizes as an enantiomerically pure sample. Both clusters feature redox active [Fe₄O₄]-cubane cores with up to four individual accessible states, which directs towards a potential application as electron-shuttle.
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Research facilities:
Röntgenzentrum
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Project title:
Design von SCO-Liganden mit Azolen und Gruppe 14 Elementen: P31076-N28 (Fonds zur Förderung der wissenschaftlichen Forschung (FWF))
CC BY 4.0
