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Journal Article

Ion-pairing effects on 1H NMR chemical shifts of cyclic conjugated carbanions

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Vogler,  Helmut
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Vogler, H. (1985). Ion-pairing effects on 1H NMR chemical shifts of cyclic conjugated carbanions. Journal of Organometallic Chemistry, 293(2), 131-137. doi:10.1016/0022-328X(85)80281-3.


Cite as: http://hdl.handle.net/21.11116/0000-0005-747A-0
Abstract
The 1H NMR chemical shifts of the cyclic conjugated hydrocarbon carbanions: cyclopentadienyl, cyclooctatetraene, cyclononatetraenyl, benzyl and methylene-cyclooctatrienyl anions, have been studied by a semiempirical approach in which the alkali counter ions are explicitly taken into account. The importance of electrostatic and covalent interactions between the ions and the ion-pairing effects on the proton shifts are elucidated.