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Labile rhodium(I)-N-heterocyclic carbene complexes

AuthorsPalacios, Laura ; Giuseppe, Andrea di ; Opalinska, Anna; Castarlenas, Ricardo ; Pérez-Torrente, Jesús J. ; Lahoz, Fernando J. ; Oro, Luis A.
Issue Date2013
PublisherAmerican Chemical Society
CitationOrganometallics 32(9): 2768-2774 (2013)
AbstractThe neutral square-planar complexes Rh(acac)(IPr)(η2-olefin) have been prepared from [Rh(μ-Cl)(IPr)(η2-olefin)]2 (IPr = 1,3-bis-(2,6-diisopropylphenyl)imidazol-2-carbene; olefin = cyclooctene, ethylene) and sodium acetylacetonate (acac). Protonation of the acetylacetonato complexes with triflic acid opens the way to the formation of the putative bare [Rh-IPr]+ fragment that has been stabilized at low temperature by labile ligands such as triflate, cyclooctene, and acetonitrile to generate Rh(OTf)(IPr)(η2-coe), [Rh(IPr)(η2-coe)(NCCH3)2]OTf, and [Rh(IPr)(NCCH3)3]OTf complexes. The derivative [Rh(IPr)(η2-coe)(NCCH3)2]OTf was further characterized by an X-ray diffraction analysis.
Publisher version (URL)http://dx.doi.org/10.1021/om400209m
Identifiersdoi: 10.1021/om400209m
issn: 0276-7333
e-issn: 1520-6041
Appears in Collections:(ISQCH) Artículos
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