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dc.contributor.authorCole, Marcus Lawforden
dc.contributor.authorJones, Cameronen
dc.contributor.authorJunk, Peter C.en
dc.identifier.citationNew Journal of Chemistry, 2002; 26 (10):1296-1303en
dc.description© Royal Society of Chemistry 2002en
dc.description.abstractThe reactivity of the N-heterocyclic carbene (NHC) 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene, IMes, with a series of halide sources, including 1,1,1,2,2,2-hexachloroethane, 1,2-dibromoethane and dibromine, has been assessed. These result in the formation of the imidazolium species 1,3-bis(2,4,6-trimethylphenyl)-2- chloroimidazolium chloride, [IMesCl][Cl], 1,3-bis(2,4,6-trimethylphenyl)imidazolium bromide, [IMesH][Br] and 1,3-bis(2,4,6-trimethylphenyl)-2-bromoimidazolium bromide, [IMesBr][Br]. Treatment of IMes with 2.0 equiv. of carbon tetrabromide, CBr₄ , in tetrahydrofuran or benzene yields the new NHC 1,3-bis(2,4,6- trimethylphenyl)-4,5-dibromoimidazol-2-ylidene, IMesBr₂ . IMesBr₂ is indefinitely stable in air and has been characterised by XRD. The molecular and supramolecular structures of compounds [IMesBr][Br]_3MeCN, [IMesH][Br], [IMesCl][Cl]•MeCN and [IMesCl][AlCl₄], the latter formed from the addition of aluminium trichloride to [IMesCl][Cl], are discussed.en
dc.description.statementofresponsibilityMarcus L. Cole, Cameron Jones and Peter C. Junken
dc.publisherRoyal Society Chemistryen
dc.titleStudies of the reactivity of N-heterocyclic carbenes with halogen and halide sourcesen
dc.typeJournal articleen
dc.contributor.schoolSchool of Chemistry and Physicsen
Appears in Collections:Chemistry publications

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