S. W. Eisma, Cornelis Altona, H. J. Geise
1974
Citations
0
Influential Citations
12
Citations
Journal
Journal of Molecular Structure
Abstract
Abstract The gas phase molecular structure of 2,3-dimethyl-2-butene has been investigated by the electron, diffraction technique. The following structural parameters (ra structure) have been obtained: CC = 1.336±0.004 A; C-C = 1.505±0.002 A; C-H = 1.092±0.003 A; ∠CC-C = 123.4±0.4°; ∠C-C-H = 110.5±0.7°; methyl torsional angle CC-C-H = 31±3°. If local C3v symmetry is assumed then a twist of 13 ±4° of the carbon skeleton is observed. This twist reduces to virtually 0° if no local symmetry is imposed on the methyl group. The twisted structure is in good agreement with that obtained by valence force-field calculations.