An [Fe₄S₄]³⁺-Alkyl Cluster Stabilized by an Expanded Scorpionate Ligand.

ABSTRACT: Alkyl-ligated iron-sulfur clusters in the [Fe₄S₄]³⁺ charge state have been proposed as short-lived intermediates in a number of enzymatic reactions. To better understand the properties of these intermediates, we have prepared and characterized the first synthetic [Fe₄S₄]³⁺-alkyl cluster. Isolation of this highly reactive species was made possible by the development of an expanded scorpionate ligand suited to the encapsulation of cuboidal clusters. Like the proposed enzymatic intermediates, this synthetic [Fe₄S₄]³⁺-alkyl cluster adopts an S = ¹/₂ ground state with g_iso > 2. Mössbauer spectroscopic studies reveal that the alkylated Fe has an unusua

SUBMITTER: McSkimming A 

PROVIDER: S-EPMC7442740 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature