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Issue 1, 2012
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Chiral anion-based NMR enantiodiscrimination of a dinuclear, cationic Ir(I) NHC complex with a figure-of-eight loop structure

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Abstract

A dinuclear Ir(I) complex with a bis-NHC ligand was formed in situ from 1,1′-((4,6-dimethyl-1,3-phenylene)bis(methylene))bis(3-methyl-1H-imidazol-3-ium) in the presence of Cs2CO3 and [Ir(μ-Cl)(cod)]2. Its solid-state structure, determined by X-ray diffraction, shows a figure-of-eight loop with both the P and M enantiomers being present. Solution NMR studies were performed to examine the enantiodiscrimination between them by applying the enantiopure anions tris(tetrachlorobenzenediolato)phosphate(V) (Δ-TRISPHAT) and bis(tetrachlorobenzenediolato)mono([1,10]binaphthalenyl-2,20-diolato)phosphate(V) (Λ-BINPHAT).

Graphical abstract: Chiral anion-based NMR enantiodiscrimination of a dinuclear, cationic Ir(i) NHC complex with a figure-of-eight loop structure

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Publication details

The article was received on 25 Aug 2011, accepted on 04 Oct 2011 and first published on 08 Nov 2011


Article type: Paper
DOI: 10.1039/C1DT11604E
Citation: Dalton Trans., 2012,41, 138-142
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    Chiral anion-based NMR enantiodiscrimination of a dinuclear, cationic Ir(I) NHC complex with a figure-of-eight loop structure

    X. Liu, J. Lacour and P. Braunstein, Dalton Trans., 2012, 41, 138
    DOI: 10.1039/C1DT11604E

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