Cationic iridium complexes of the Xantphos ligand. Flexible coordination modes and the isolation of the hydride insertion product with an alkene

Journal article

Reaction of the Ir(I)-Xantphos complex [Ir(κ2-Xantphos) (COD)][BArF4] (Xantphos = 4,5-bis(diphenylphosphino)-9,9- dimethylxanthene, ArF = C6H3(CF 3)2) with H2 in acetone or CH 2Cl2/MeCN affords the Ir(III)-hydrido complexes [Ir(κ3-Xantphos)(H)2(L)][BArF4], L = acetone or MeCN, whereas in non-coordinating CH 2Cl2 solvent dimeric [Ir(κ3-Xantphos)(H) (μ-H)]2[BArF4]2 is formed. A common intermediate in these reactions that invokes a (σ, η2-C8H13) ligand is reported. Addition of excess tert-butyle...

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Authors: Pontiggia, A; Chaplin, AB; Weller, A

• Publication status: Published
• Journal: JOURNAL OF ORGANOMETALLIC CHEMISTRY
• Volume: 696
• Issue: 17
• Pages: 2870-2876
• Publication date: 2011-08-15
• DOI: 10.1016/j.jorganchem.2011.01.036
• ISSN: 0022-328X
• Language: English
• Keywords: Phosphine; X-ray; Hydride; Xantphos; Pincer; Iridium