Preparation of polynuclear NHC complexes by post-synthetic modification of half-sandwich rhodium and iridium complexes bearing C-azolato ligands
- 26 June 2018
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Dalton Transactions
- Vol. 47 (28) , 9442-9452
Abstract
A series of bimetallic and trimetallic complexes has been prepared by N-alkylation of mononuclear half-sandwich rhodium and iridium di-NHC complexes featuring bidentate chelate ligands composed of a classical NHC and a C-azolato donor. The shape and the separation between metal centers in the obtained complexes are highly dependent on the alkylating agent used. While the polynuclear complexes were formed as diastereomeric mixtures according to NMR spectroscopy, X-ray diffraction analysis revealed their remarkable preference to crystallize as meso compounds. The reactivity of the bimetallic, olefin-bridged complexes in electrophilic addition reactions has been investigated.Keywords
Funding Information
- National Natural Science Foundation of China (21531002, 21720102004)
- Science and Technology Commission of Shanghai Municipality (13JC1400600)
- Alexander von Humboldt-Stiftung
- Deutsche Forschungsgemeinschaft (SFB 858, IRTG 2027)
This publication has 94 references indexed in Scilit:
- Heterotrimetallic complexes of a phenylene-bridged tricarbene ligandDalton Transactions, 2013
- Selective Alkylation of Amines with Alcohols by Cp*–Iridium(III) Half-Sandwich ComplexesOrganic Letters, 2013
- Synthesis of complexes bearing NH,NMe-substituted NHCs by oxidative addition of 2-halogenato-N-methylbenzimidazoles to Ni0Chemical Communications, 2011
- Imidazol-2-yl Complexes of Cp*Ir as Bifunctional Ambident ReactantsJournal of the American Chemical Society, 2008
- Isolation and Interconversion of Protic N-Heterocyclic Carbene and Imidazolyl Complexes: Application to Catalytic Dehydrative Condensation of N-(2-Pyridyl)benzimidazole and Allyl AlcoholOrganometallics, 2008
- A short history of SHELXActa Crystallographica Section A Foundations of Crystallography, 2007
- “Cp*Ir(III)” Complexes with Hemicleaveable Ligands of the Type N-Alkenyl Imidazolin-2-ylidene. Reactivity and Catalytic PropertiesOrganometallics, 2007
- Iridium Complexes withN-Allyl-Substituted Benzimidazol-2-ylidene Ligands and Their Application in Catalytic Transfer HydrogenationOrganometallics, 2005
- Nucleophilic and organometallic displacement reactions of allylic compounds: stereo-and regiochemistryTetrahedron, 1980
- Substitution And Rearrangement Reactions Of Allylic CompoundsChemical Reviews, 1956