在环芳烃配位的 FeS 配合物中，簇状铁-硫键的断裂。
Cleavage of cluster iron-sulfide bonds in cyclophane-coordinated FeS complexes.
机构信息
Department of Chemistry, Center for Catalysis, University of Florida, Gainesville, FL 32611-7200, USA.
出版信息
Dalton Trans. 2021 Jan 21;50(3):816-821. doi: 10.1039/d0dt03805a. Epub 2021 Jan 4.
Abstract
Reaction of the tri(μ-sulfido)triiron(iii) tris(β-diketiminate) cyclophane complex, FeSL (1), or of the di(μ-sulfido)diiron(iii) complex FeSHL (5), with the related tri(bromide)triiron(ii) complex FeBrL (2) results in electron and ligand redistribution to yield the mixed-ligand multiiron complexes, including FeBrSL (3) and FeBrSHL (4). The cleavage and redistribution observed in these complexes is reminiscent of necessary Fe-S bond cleavage for substrate activation in nitrogenase enzymes, and provides a new perspective on the lability of Fe-S bonds in FeS clusters.
摘要
三(μ-硫代)三铁(III)三(β-二酮亚胺)环芳烃配合物 FeSL(1)或二(μ-硫代)二铁(III)配合物 FeSHL(5)与相关的三(溴化物)三铁(II)配合物 FeBrL(2)反应，导致电子和配体重新分布，生成混合配体多铁配合物，包括 FeBrSL(3)和 FeBrSHL(4)。这些配合物中观察到的断裂和重新分布类似于氮酶中底物激活所必需的 Fe-S 键断裂，为 FeS 簇中 Fe-S 键的不稳定性提供了新的视角。
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