Li-7 solid-state NMR spectroscopic study of aryllithium complexes: effectsof aggregation and solvation

Seventeen aryllithium complexes were studied by Li-7 solid-state NMR spectr oscopy. The solid structures of most of the complexes studied are known fro m x-ray crystallography and include differently substituted aryllithium com plexes in addition to some phenyllithium complexes. It is shown that the qu adrupolar coupling constant, chi, is very sensitive to changes in aggregati on and solvation. From the magnitude of chi, it is often possible to deduce the aggregation state and also obtain information about the solvation rega rding the number and type of donor atoms coordinating the lithium cation. C opyright (C) 2000 John Wiley & Sons, Ltd.