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• W4384007188 abstract "Abstract The complexes Cp(MeIm)IrI 2 and Cp Me4 (MeIm)IrCl 2 have been prepared and subsequently methylated to form Cp(MeIm)IrMe 2 and Cp Me4 (MeIm)IrMe 2 (Cp=η 5 ‐C 5 H 5 , Cp Me4 =η 5 ‐C 5 HMe 4 , MeIm=1,3‐dimethylimidazol‐2‐ylidene). We attempted unsuccessfully to use the dimethyl complexes to study C−D bond activation via methyl‐group abstraction. Protonation with one equivalent of a weak acid, such as 2,6‐dimethylpyridinium chloride, affords methane and Ir III methyl chloride complexes. 1 H‐NMR experiments show addition of pyridinium [BArF 20 ] − (BArF 20 =[B(C 6 F 5 ) 4 ] − ) to the dimethyl species forms [Cp(MeIm)IrMe(py)] + [BArF 20 ] − (py=pyridine) or [Cp Me4 (MeIm)IrMe(py)] + [BArF 20 ] − respectively, alongside methane, while use of the [BArF 20 ] − salts of more bulky 2,6‐dimethylpyridinium and 2,6‐di‐ tert‐ butylpyridinium gave an intractable mixture. Likewise, the generation of 16 e − species [Cp Me4 (MeIm)IrMe] + [BArF 20 ] − or [Cp(MeIm)IrMe] + [BarF 20 ] − at low temperature using 2,6‐dimethylpyridinium or 2,6‐di‐ tert‐ butylpyridinium in thawing C 6 D 6 or toluene‐ d 8 formed an intractable mixture and did not lead to C−D bond activation. X‐ray structures of several Ir III complexes show similar sterics as that found for the previously reported Cp* analogue." @default.
• W4384007188 created "2023-07-13" @default.
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• W4384007188 date "2023-07-28" @default.
• W4384007188 modified "2023-10-14" @default.
• W4384007188 title "Cyclopentadienyl Complexes of Ir^III for Attempted C−D Bond Activation" @default.
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• W4384007188 doi "https://doi.org/10.1002/ejic.202300369" @default.
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