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  A trans-1,2 End-On Disulfide-Bridged Iron–Tetracarbene Dimer and Its Electronic Structure

Meyer, S., Krahe, O., Kupper, C., Klawitter, I., Demeshko, S., Bill, E., et al. (2015). A trans-1,2 End-On Disulfide-Bridged Iron–Tetracarbene Dimer and Its Electronic Structure. Inorganic Chemistry, 54(20), 9770-9776. doi:10.1021/acs.inorgchem.5b01446.

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 Creators:
Meyer, Steffen1, Author
Krahe, Oliver2, Author              
Kupper, Claudia1, Author
Klawitter, Iris1, Author
Demeshko, Serhiy1, Author
Bill, Eckhard2, Author              
Neese, Frank2, Author              
Meyer, Franc1, Author
Affiliations:
1Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, 37077 Göttingen, Germany, ou_persistent22              
2Research Department Neese, Max Planck Institute for Chemical Energy Conversion, Max Planck Society, ou_3023886              

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 Abstract: A disulfide-bridged diiron complex with [Fe–S–S–Fe] core, which represents an isomer of the common biological [2Fe–2S] ferredoxin-type clusters, was synthesized using strongly σ-donating macrocyclic tetracarbene capping ligands. Though the complex is quite labile in solution, single crystals were obtained, and the structure was elucidated by X-ray diffraction. The electron-rich iron–sulfur core is found to show rather unusual magnetic and electronic properties. Experimental data and density functional theory studies indicate extremely strong antiferromagnetic coupling (−J > 800 cm–1) between two low-spin iron(III) ions via the S22– bridge, and the intense near-IR absorption characteristic for the [Fe–S–S–Fe] core was assigned to a S → Fe ligand-to-metal charge transfer transition.

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Language(s): eng - English
 Dates: 2015-06-252015-10-072015-10-19
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.inorgchem.5b01446
 Degree: -

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Title: Inorganic Chemistry
  Abbreviation : Inorg. Chem.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 54 (20) Sequence Number: - Start / End Page: 9770 - 9776 Identifier: ISSN: 0020-1669
CoNE: https://pure.mpg.de/cone/journals/resource/0020-1669