A monomeric (trimethylsilyl)methyl lithium complex: synthesis, structure, decomposition and preliminary reactivity studies

Monomeric organolithium (LiR) complexes could provide enhanced Li-C bond reactivity and suggest mechanisms for a plethora of LiR-mediated reactions. They are highly sought-after but remain a synthetic challenge for organometallic chemists. In this work, we report the synthesis and characterisation o...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2022-07, Vol.51 (28), p.177-1713
Main Authors: Davison, Nathan, Waddell, Paul G, Dixon, Casey, Wills, Corinne, Penfold, Thomas J, Lu, Erli
Format: Article
Language:English
Subjects:
Chemists
Crystal structure
Decomposition reactions
Ligands
Lithium
NMR spectroscopy
Reactivity
Single crystals
Synthesis
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Summary:Monomeric organolithium (LiR) complexes could provide enhanced Li-C bond reactivity and suggest mechanisms for a plethora of LiR-mediated reactions. They are highly sought-after but remain a synthetic challenge for organometallic chemists. In this work, we report the synthesis and characterisation of a monomeric (trimethylsilyl)methyl lithium complex, namely [Li(CH 2 SiMe 3 )(κ 3 - N , N ′, N ′′-Me 6 Tren)] ( 1 ), where Me 6 Tren is a tetradentate neutral amine ligand. The structure of 1 was comprehensively examined by single-crystal X-ray diffraction, variable temperature NMR spectroscopy and electron absorption spectroscopy. Complex 1 decomposes via ligand C-H and C-N activations to produce a Li amide complex 2 . Preliminary reactivity studies of 1 reveal C&z.dbd;O insertion and C-H activation reaction patterns. In this work, a rare monomeric organolithium complex was reported, stabilised by a neutral tetradentate amine ligand. Its structure and decomposition/reactivity were studied.
ISSN:1477-9226
1477-9234
DOI:10.1039/d1dt03532k