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 approximately 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.
Lecachey
Baptiste
B
CNRS UMR 6014 & FR 3038, Université de Rouen and INSA de Rouen, 76821 Mont St. Aignan Cedex, France.
Oulyadi
Hassan
H
Lameiras
Pedro
P
Harrison-Marchand
Anne
A
Gérard
Hélène
H
Maddaluno
Jacques
J
D003198:Computer Simulation; D019281:Dimerization; D005663:Furans / Q000737:chemistry*; D018021:Lithium Chloride / Q000737:chemistry*; D008280:Magnetics; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*
D005663:Furans; D009942:Organometallic Compounds; C520093:methyllithium; C018674:tetrahydrofuran; D018021:Lithium Chloride