Issue 3, 2021

Cleavage of cluster iron–sulfide bonds in cyclophane-coordinated FenSm complexes

Abstract

Reaction of the tri(μ-sulfido)triiron(III) tris(β-diketiminate) cyclophane complex, Fe3S3LEt/Me (1), or of the di(μ-sulfido)diiron(III) complex Fe2S2HLEt/Me (5), with the related tri(bromide)triiron(II) complex Fe3Br3LEt/Me (2) results in electron and ligand redistribution to yield the mixed-ligand multiiron complexes, including Fe3Br2SLEt/Me (3) and Fe2Br2SHLEt/Me (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.

Graphical abstract: Cleavage of cluster iron–sulfide bonds in cyclophane-coordinated FenSm complexes

Supplementary files

Article information

Article type
Communication
Submitted
04 Nov 2020
Accepted
21 Dec 2020
First published
04 Jan 2021

Dalton Trans., 2021,50, 816-821

Cleavage of cluster iron–sulfide bonds in cyclophane-coordinated FenSm complexes

W. R. Buratto, R. B. Ferreira, V. J. Catalano, R. García-Serres and L. J. Murray, Dalton Trans., 2021, 50, 816 DOI: 10.1039/D0DT03805A

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