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Article Dans Une Revue ACS Organic & Inorganic Au Année : 2022

Substituent-Induced Control of fac / mer Isomerism in Azine-NHC Fe(II) Complexes

Résumé

The stereoselective synthesis of geometrical iron(II) complexes bearing azine-NHC ligands is described. Facial and meridional selectivity is achieved as a function of the steric demand of the azine unit, with no remarkable influence of the carbene nature. More specifically, meridional complexes are obtained upon selecting bulky 5-mesityl-substituted pyridyl coordinating units. Unexpectedly, increase of the steric hindrance in the α position with respect to the N coordinating atom results in an exclusive facial configuration, which is in stark contrast to the meridional selectivity induced by other reported α-substituted bidentate ligands. Investigation of the structure and the optical and electrochemical properties of the here-described complexes has revealed the non-negligible effect of the fac/mer ligand configuration around the metal center.
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hal-03793259 , version 1 (15-11-2022)

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Ulises Carrillo, Antonio Francés-Monerris, Anil Reddy Marri, Cristina Cebrián, Philippe Gros. Substituent-Induced Control of fac / mer Isomerism in Azine-NHC Fe(II) Complexes. ACS Organic & Inorganic Au, 2022, ⟨10.1021/acsorginorgau.2c00038⟩. ⟨hal-03793259⟩
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