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

Christina Y. Tang, Jan Lednik, Dragoslav Vidovic, Amber L. Thompson, Simon Aldridge

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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+.

Original languageEnglish
Pages (from-to)2523-2525
Number of pages3
JournalChemical Communications
Issue number9
Publication statusPublished - 7 Mar 2011
Externally publishedYes

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