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- Title
Do Corroles Stabilize Tetravalent Antimony?
- Authors
Eulberg, Simon; Schulze, Nina; Krumsieck, Jens; Klein, Niels; Bröring, Martin
- Abstract
Antimony corrole cations have been prepared by one‐electron oxidation of antimony(III) congeners with silver(I) and copper(II) salts. Isolation and crystallization was successful for the first time, and the X‐ray crystallographic investigation unraveled structural similarities with antimony(III)corroles. EPR experiments showed strong hyperfine interactions of the unpaired electron with the 121Sb (I=5/2) and 123Sb nuclei (I=7/2). A DFT analysis supports the description of the oxidized form as a SbIII corrole radical with less than 2 % SbIV character. In the presence of water or a fluoride source like PF6−, the compounds undergo a redox disproportionation to yield known antimony(III)corroles and either difluorido‐antimony(V)corroles, or bis‐μ‐oxido‐di[antimony(V)corroles] via novel cationic hydroxo‐antimony(V) derivatives.
- Subjects
ANTIMONY; EINSTEIN-Podolsky-Rosen experiment; COPPER; HYPERFINE interactions; RADICALS (Chemistry)
- Publication
Angewandte Chemie, 2023, Vol 135, Issue 33, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202306598