ISSN:
0749-1581
Keywords:
Lithium
;
NMR
;
Iminolithiums
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Variable-temperature 7Li and proton NMR spectra of four hexameric (in the solid state) iminolithium compounds, (R1R2C=NLi)6 [where R1 = Me2N,R2= Ph (1), R1 = R2 = Me2N (2), R1 = But, R2 = Ph (3) and R1 = R2 = But (4)], recorded for toluene-d8, solutions of differing concentrations, are described, and the results are discussed with respect to known solid-state structures. Complex equilibria, probably involving trimeric units and higher aggregates than hexamers, have been detected at low temperatures for solutions of 1 and 2, although similar equilibria do not occur, or are too rapid to detect even at the lowest temperatures attainable, for solutions of 3 and 4.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260240817
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