Journal
COORDINATION CHEMISTRY REVIEWS
Volume 469, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2022.214652
Keywords
Imine; Schiff Base; Azolylidene; N -heterocyclic carbene; Metal complex; Homogeneous catalysis
Categories
Funding
- ESKOM (TESP program)
- c* change (PAR program)
- NRF [118527]
- SASOL
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This review elaborates on the chronological development of imino-NHC ligands and their complexes with late first-row transition metals utilized in homogeneous catalysis. Imino-NHC ligands have gained popularity due to their general stability, better resistance to degradation, and suitable coordinative and electronic properties for various catalytic transformations.
Recently, ligand frameworks incorporating the combination of five-membered ring N-heterocyclic car-bene (NHC) and Schiff base (imine) donors have been explored to combine the abilities of the azolylidene and the imine in stabilising metal centres. The recent popularity of such imine-functionalised NHC (imino-NHC) ligands is due to their general stability and better resistance to degradation and hydrolysis. In addition, the difference in binding strengths of the donor atoms to metal centres imparts coordinative and electronic properties suitable for a wide variety of catalytic transformations. Hence, this review elab-orates on the chronological development of imino-NHC ligands and their complexes with late first-row transition metals utilised in homogeneous catalysis. (c) 2022 Elsevier B.V. All rights reserved.
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