The "cis effect" in β-substituted vinyl ethers and halides

Document Type

Article

Publication Date

1-1-1982

Abstract

NMR data for the dimethoxyethylenes, the dipropenyl ethers and a number of related compounds indicate that as the differential 13C shielding increases for the cis relative to the trans isomer, the cis stability also increases. The "cis effect" is explained by the existence of permanent dipoles in these molecules, with the closer proximity of the dipoles in the cis isomer resulting in increased electron density in the heavy atom skeleton, and, therefore, in increased thermodynamic stability. © 1982.

Identifier

1842370469 (Scopus)

Publication Title

Journal of Molecular Structure

External Full Text Location

https://doi.org/10.1016/0022-2860(82)85112-0

ISSN

00222860

First Page

83

Last Page

90

Issue

1-2

Volume

84

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