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Multinuclear iron-phenyl species in reactions of simple iron salts with PhMgBr: identification of Fe₄(μ-Ph)₆(THF)₄ as a key reactive species for cross-coupling catalysis.

ABSTRACT: The first direct syntheses, structural characterizations, and reactivity studies of iron-phenyl species formed upon reaction of Fe(acac)₃ and PhMgBr in THF are presented. Reaction of Fe(acac)₃ with 4 equiv. PhMgBr in THF leads to the formation of [FePh₂(μ-Ph)]₂ ^2- at -80 °C, which can be stabilized through the addition of N-methylpyrrolidone. Alternatively, at -30 °C this reaction leads to the formation of the tetranuclear iron-phenyl cluster, Fe₄(μ-Ph)₆(THF)₄. Further synthetic studies demonstrate that analogous tetranuclear iron clusters can be formed with both 4-F-PhMgBr and p-tolylMgBr, illustrating the generality of this structural motif for reactions of simple ferric salts and aryl G

SUBMITTER: Carpenter SH

PROVIDER: S-EPMC6201819 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Multinuclear iron-phenyl species in reactions of simple iron salts with PhMgBr: identification of Fe₄(μ-Ph)₆(THF)₄ as a key reactive species for cross-coupling catalysis.

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Multinuclear iron-phenyl species in reactions of simple iron salts with PhMgBr: identification of Fe4(μ-Ph)6(THF)4 as a key reactive species for cross-coupling catalysis.

OmicsDI is part of the ELIXIR infrastructure

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Multinuclear iron-phenyl species in reactions of simple iron salts with PhMgBr: identification of Fe₄(μ-Ph)₆(THF)₄ as a key reactive species for cross-coupling catalysis.