Ruthenium(II) Bipyridyl Complexes with Cyclometalated NHC Ligands

Schleicher, David; Leopold, Hendrik; Borrmann, H.; Strassner, Thomas

doi:10.1021/acs.inorgchem.7b00831

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Ruthenium(II) Bipyridyl Complexes with Cyclometalated NHC Ligands

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Borrmann, H.
Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Schleicher, D., Leopold, H., Borrmann, H., & Strassner, T. (2017). Ruthenium(II) Bipyridyl Complexes with Cyclometalated NHC Ligands. Inorganic Chemistry, 56(12), 7217-7229. doi:10.1021/acs.inorgchem.7b00831.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-AE39-E

Abstract

We present the synthesis and characterization of novel cyclometalated ruthenium N-heterocyclic carbene (NHC) complexes of the general formula [Ru(C boolean AND C*)(bpy)(2)]PF6 (bpy = 2,2'-bipyridine), with the C boolean AND C* ligand being based on different 1-phenylimidazoles. They were synthesized in a one-pot procedure starting from the corresponding p-cymene NHC complexes [Ru(C boolean AND C*)(p-cymene)Cl]. Their structural, spectroscopic, and electrochemical properties were investigated by NMR, X-ray, UV/vis, and CV, as well as density functional theory methods. Because of the stronger electron-donating carbene ligands, these complexes represent a new class of bisheteroleptic dyes with improved photophysical and electrochemical properties.