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  4. Synthesis and Photophysical Characterization of Cyclometalated Ruthenium Complexes with N-Heterocyclic Carbene Ligands
 
research article

Synthesis and Photophysical Characterization of Cyclometalated Ruthenium Complexes with N-Heterocyclic Carbene Ligands

Aghazada, Sadig  
•
Zimmermann, Iwan
•
Scutelnic, Valeriu
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2017
Organometallics

In the search of new ligand environment for the ruthenium(II) complexes with pyridine-type ligands, we developed seven new cyclometalated ruthenium complexes with N-heterocyclic carbenes (NHCs). In a two-step procedure, we synthesized complexes with the general formula Ru(NHC<^>C)(bpyR(2))(2), where NHC<^>C is a bidentate ligand coordinating with the carbene and cyclometalation; bpyR(2) is either 2,2'-bipyridine, when R = H, or 4,4'-dimethoxycarbonyl-2,2'-bipyridine, when R = CO2Me. To investigate the photophysical properties of these complexes, various NHC and cyclometalated ligands of different electron donating potency were used. The new compounds were characterized by H-1, C-13, and COSY NMR methods, cyclic voltammetry, absorption spectroscopy, and single crystal X-ray crystallography. These complexes exhibit perfect redox reversibility, and in contrast to the reported analogues without cyclometalation, they do not have photoemission in solution.

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Type
research article
DOI
10.1021/acs.organomet.7b00354
Web of Science ID

WOS:000405445000005

Author(s)
Aghazada, Sadig  
Zimmermann, Iwan
Scutelnic, Valeriu
Nazeeruddin, Mohammad Khaja
Date Issued

2017

Publisher

American Chemical Society

Published in
Organometallics
Volume

36

Issue

13

Start page

2397

End page

2403

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GMF  
Available on Infoscience
September 5, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/140214
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