Towards longer-lived metal-to-ligand charge transfer states of iron(II) complexes: an N-heterocyclic carbene approach

Yizhu Liu; Tobias Harlang; Sophie E. Canton; Pavel Chábera; Karina Suárez-Alcántara; André Fleckhaus; Dimali A. Vithanage; Erik Göransson; Alice Corani; Reiner Lomoth; Villy Sundström; Kenneth Wärnmark

doi:10.1039/C3CC43833C

Towards longer-lived metal-to-ligand charge transfer states of iron(ii) complexes: an N-heterocyclic carbene approach†

Yizhu Liu,^ab Tobias Harlang,^b Sophie E. Canton,^c Pavel Chábera,^b Karina Suárez-Alcántara,^c André Fleckhaus,^a Dimali A. Vithanage,^b Erik Göransson,^d Alice Corani,^b Reiner Lomoth,^d Villy Sundström*^b and Kenneth Wärnmark*^a

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* Corresponding authors

^a Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 22100 Lund, Sweden
E-mail: kenneth.warnmark@chem.lu.se
Tel: +46 46 222 8210

^b Department of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
E-mail: villy.sundstrom@chemphys.lu.se
Tel: +46 46 222 4690

^c Department of Synchrotron Instrumentation, Lund University, Box 124, 22100 Lund, Sweden

^d Department of Chemistry -Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden

Abstract

A 9 ps ³MLCT lifetime was achieved by a Fe^II complex based on C(NHC)⁁N(py)⁁C(NHC) pincer ligands. This is the longest known so far for any kind of complexes of this abundant metal, and increased by almost two orders of magnitude compared to the reference Fe^II bis-terpyridine complex.

Chemical Communications

Towards longer-lived metal-to-ligand charge transfer states of iron(ii) complexes: an N-heterocyclic carbene approach†

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Towards longer-lived metal-to-ligand charge transfer states of iron(II) complexes: an N-heterocyclic carbene approach

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