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

Lookup NU author(s): Dr Nathan Davison, Dr Paul Waddell, Dr Casey Dixon, Dr Corinne Wills, Professor Thomas Penfold, Dr Erli Lu

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Abstract

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(CH₂SiMe₃)(κ³-N,N′,N′′-Me⁶Tren)] (1), where Me⁶Tren 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 CO insertion and C–H activation reaction patterns.

Publication metadata

Author(s): Davison N, Waddell PG, Dixon C, Wills C, Penfold TJ, Lu E

Publication type: Article

Publication status: Published

Journal: Dalton Transactions

Year: 2022

Volume: 51

Issue: 28

Pages: 10707-10713

Print publication date: 28/07/2022

Online publication date: 26/11/2021

Acceptance date: 19/10/2021

Date deposited: 24/03/2022

ISSN (print): 1477-9226

ISSN (electronic): 1477-9234

Publisher: Royal Society of Chemistry

URL: https://doi.org/10.1039/D1DT03532K

DOI: 10.1039/D1DT03532K

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