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

Vogler, Helmut

doi:10.1016/0022-328X(85)80281-3

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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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https://www.sciencedirect.com/science/article/pii/0022328X85802813/pdf?md5=e6a0101ebd439402915d1aa38a646a9b&pid=1-s2.0-0022328X85802813-main.pdf
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引用

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.

引用: https://hdl.handle.net/21.11116/0000-0005-747A-0

要旨

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.