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Molecular Geometry of Trans, Trans-1,2-Dimethyl- and of Trans, cis-1,2-Dimethyl-Ethylenesulfite; a Gas Diffraction Study

✍ Scribed by H. J. Geise; E. van Laere

Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
327 KB
Volume
84
Category
Article
ISSN
0037-9646

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✦ Synopsis

Abstract

The configuration of trans, trans‐1,2‐dimethyl and of trans, cis‐1, 2‐dimethylethylene‐sulfite, as suggested by NMR, is in agreement with electrondiffraction results in the gas phase. The best fit to the observed diffraction intensities was obtained with a non‐planar sulfite ring, ϕ~max~ = 42.6°. In the trans, cis derivative the methyl groups are pseudo‐equatorial, whereas in the trans, trans compound one methyl is pseudo‐axial, the other pseudo‐equatorial. Although these are the best, static representations of the molecules, mixtures containing several conformations cannot be excluded.

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