Bonding and Catalytic Application of Ruthenium N‑Heterocyclic Carbene Complexes Featuring Triazole, Triazolylidene, and Imidazolylidene Ligands

The first mixed normal/abnormal NHC ruthenium­(II) complexes bearing triazole/imidazole-based ligands are presented. The ruthenium complexes show differing coordination geometries depending on the ligand sphere and the coordination of the triazole. Two Ru­(II) monocarbene complexes have been obtaine...

Full description

Saved in:
Bibliographic Details
Published in:Organometallics 2016-09, Vol.35 (17), p.2980-2986
Main Authors: Hollering, Manuela, Albrecht, Martin, Kühn, Fritz E
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The first mixed normal/abnormal NHC ruthenium­(II) complexes bearing triazole/imidazole-based ligands are presented. The ruthenium complexes show differing coordination geometries depending on the ligand sphere and the coordination of the triazole. Two Ru­(II) monocarbene complexes have been obtained, with a 2-imidazolylidene carbene and the 1,2,3-triazoles acting as neutral nitrogen donors. In addition, a tridentate Ru­(II) complex featuring a normal 2-imidazolylidene as well as two abnormal 1,2,3-triazolylidene carbene moieties is described. Both structural motifs are evaluated in transfer hydrogenation of acetophenone, with the electron-rich Ru­(II) tri-NHC exhibiting the highest conversion.
ISSN:0276-7333
1520-6041
DOI:10.1021/acs.organomet.6b00504