Iridium(I) N-heterocyclic carbene complexes of benzimidazol-2-ylidene: effect of electron donating groups on the catalytic transfer hydrogenation reaction

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dc.contributor.authorGulcemal, Suleyman
dc.contributor.authorGokce, Aytac Gurhan
dc.contributor.authorCetinkaya, Bekir
dc.date.accessioned2019-10-27T21:43:17Z
dc.date.available2019-10-27T21:43:17Z
dc.date.issued2013
dc.departmentEge Üniversitesien_US
dc.description.abstractTwo new [Ir(NHC)(COD)Cl] (NHC = N-heterocyclic carbene; COD = 1,5-cyclooctadiene) iridium complexes (2a,b) have been prepared by the reaction of [Ir(COD) Cl](2) with in situ prepared NHC-Ag carbene transfer agents in dichloromethane at ambient temperature. They have been fully characterized by H-1, C-13 NMR, and elemental analysis. X-ray diffraction studies on single crystals of 2a and 2b confirm the square planar geometry. Complexes of type [Ir(NHC)(CO)(2)Cl] [NHC = 1,3-diisopropyl(5,6-dimethyl)benzimidazol-2-ylidene] 3 were also synthesized to compare sigma-donor/pi-acceptor strength of NHC ligands. Transfer hydrogenation (TH) reactions of various aldehydes and ketones have been studied using complexes 2a and 2b as catalysts. The 5,6-dimethyl substituted iridium complex (2b) showed the highest catalytic activity for the TH reaction.en_US
dc.description.sponsorshipTurkish Academy of SciencesTurkish Academy of Sciences; Ege UniversityEge University; Dokuz Eylul UniversityDokuz Eylul University [2010.KB.FEN.13]en_US
dc.description.sponsorshipWe thank Prof. S. T. Astley for helpful discussions. The financial support from The Turkish Academy of Sciences and Ege University is gratefully acknowledged. The authors also acknowledge Dokuz Eylul University for the use of the Agilent Xcalibur Eos diffractometer (purchased under University Research Grant No: 2010.KB.FEN.13).en_US
dc.identifier.doi10.1039/c2dt32482ben_US
dc.identifier.endpage7311en_US
dc.identifier.issn1477-9226
dc.identifier.issn1477-9234
dc.identifier.issue20en_US
dc.identifier.pmid23223682en_US
dc.identifier.startpage7305en_US
dc.identifier.urihttps://doi.org/10.1039/c2dt32482b
dc.identifier.urihttps://hdl.handle.net/11454/47059
dc.identifier.volume42en_US
dc.identifier.wosWOS:000318307900008en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherRoyal Soc Chemistryen_US
dc.relation.ispartofDalton Transactionsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleIridium(I) N-heterocyclic carbene complexes of benzimidazol-2-ylidene: effect of electron donating groups on the catalytic transfer hydrogenation reactionen_US
dc.typeArticleen_US

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