Heteroleptic pyridyl-carbene iron complexes with tuneable electronic properties

Thibaut Duchanois, Thibaud Etienne, Marc Beley, Xavier Assfeld, Eric A. Perpète, Antonio Monari, Philippe C. Gros

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

New heteroleptic iron complexes mixing a terpyridine bearing a protonable pyridyl substituent (pytpy) and a pyridyl carbene ligand (carb) have been prepared and characterised by UV/Vis spectroscopy, cyclic voltammetry and TD-DFT computations. The absorption spectrum of [Fe(carb)(pytpy)]2+ showed a notable redshift compared with the homoleptic [Fe(carb)2] 2+ complex. The MLCT transition occurred at even lower energy when the pendant pyridine was protonated, leading to a wide absorption domain in the 450-650 nm range. Calculations revealed the strong propensity of excited electrons to move from the metal to the pytpy ligand in the complex. This new family of complexes is a promising addition to the arsenal of iron-based chromophores with tuneable electronic properties.

langue originaleAnglais
Pages (de - à)3747-3753
Nombre de pages7
journalEuropean Journal of Inorganic Chemistry
Numéro de publication23
Les DOIs
Etat de la publicationPublié - 2014

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