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Issue 9, 2011
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Responses to unsaturation in iridium mono(N-heterocyclic carbene) complexes: synthesis and oligomerization of [LIr(H)2Cl] and [LIr(H)2]+

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Abstract

Highly unsaturated mono(N-heterocyclic carbene) Ir(III) systems have been targeted via ligand abstraction protocols. Hydrogenation of Ir(IPr)(cod)Cl (1a) leads to the formation of the highly reactive (fluxional) trimer [Ir(IPr)(H)2Cl]3, while the related IMes system undergoes further C–H bond activation. Chloride abstraction from 1aprior to hydrogenation allows access to sources of the 12-electron [Ir(IPr)(H)2]+ fragment, which, in the absence of a suitable donor, dimerizes to give [{Ir(IPr)(H)(μ-H)}2]2+.

Graphical abstract: Responses to unsaturation in iridium mono(N-heterocyclic carbene) complexes: synthesis and oligomerization of [LIr(H)2Cl] and [LIr(H)2]+

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Publication details

The article was received on 07 Dec 2010, accepted on 05 Jan 2011 and first published on 21 Jan 2011


Article type: Communication
DOI: 10.1039/C0CC05431C
Citation: Chem. Commun., 2011,47, 2523-2525
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    Responses to unsaturation in iridium mono(N-heterocyclic carbene) complexes: synthesis and oligomerization of [LIr(H)2Cl] and [LIr(H)2]+

    C. Y. Tang, J. Lednik, D. Vidovic, A. L. Thompson and S. Aldridge, Chem. Commun., 2011, 47, 2523
    DOI: 10.1039/C0CC05431C

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