MeLi + LiCl in THF: One Heterodimer and No Tetramers

MeLi + LiCl in THF: One Heterodimer and No Tetramers

The structure of the aggregates formed when mixing methyllithium and lithium chloride in THF has been studied by multinuclear magnetic resonance at 170 K. The data suggest that only one new entity is observed, that is the dimer [(MeLi)(LiCl)], in equilibrium (K ≈ 0.6) with [MeLi]4 and [LiCl]2. NMR d...

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Veröffentlicht in:Journal of organic chemistry 2010-09, Vol.75 (17), p.5976-5983
Hauptverfasser: Lecachey, Baptiste, Oulyadi, Hassan, Lameiras, Pedro, Harrison-Marchand, Anne, Gérard, Hélène, Maddaluno, Jacques
Format: Artikel
Sprache:eng
Schlagworte:
Chemical Sciences
Computer Simulation
Cross-disciplinary physics: materials science
rheology
Dimerization
Exact sciences and technology
Furans - chemistry
Lithium Chloride - chemistry
Magnetics
Materials science
Methods of nanofabrication
Molecular Structure
Organic chemistry
Organometallic Compounds - chemistry
Physics
Supramolecular and biochemical assembly
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Zusammenfassung:The structure of the aggregates formed when mixing methyllithium and lithium chloride in THF has been studied by multinuclear magnetic resonance at 170 K. The data suggest that only one new entity is observed, that is the dimer [(MeLi)(LiCl)], in equilibrium (K ≈ 0.6) with [MeLi]4 and [LiCl]2. NMR diffusion measurements lead to the conclusion that this dimer is trisolvated in THF at 170 K, a solvation scheme in agreement with DFT computations.
ISSN:0022-3263
1520-6904
DOI:10.1021/jo101282m