Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, USA.
J Org Chem. 2013 Aug 2;78(15):7498-507. doi: 10.1021/jo401080n. Epub 2013 Jul 15.
The method of continuous variation (MCV) was used in conjunction with (6)Li NMR spectroscopy to characterize four lithium phenolates solvated by a range of solvents, including N,N,N',N'-tetramethylethylenediamine, Et2O, pyridine, protic amines, alcohols, and highly dipolar aprotic solvents. Dimers, trimers, and tetramers were observed, depending on the precise lithium phenolate-solvent combinations. Competition experiments (solvent swaps) provide insights into the relative propensities toward mixed solvation.
采用连续变化法(MCV)结合(6)Li NMR 光谱法,对一系列溶剂(包括 N,N,N',N'-四甲基乙二胺、Et2O、吡啶、质子胺、醇和高偶极非质子溶剂)稳定的四种锂酚盐进行了表征。根据具体的锂酚盐-溶剂组合,可以观察到二聚体、三聚体和四聚体。竞争实验(溶剂交换)提供了对混合溶剂化相对倾向的深入了解。