Barrier to Rotation about Sulfur-Sulfur Bonds in Homocyclic Sulfur Molecules
Open Access
- 1 May 1983
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 38 (5) , 543-545
- https://doi.org/10.1515/znb-1983-0502
Abstract
It is shown that the distances (d) of the 19 longest bonds in 9 homocyclic sulfur rings of type Sn (n = 6-20) depend on the torsional angles (τ) which vary between 0° and 140°. The function d = f(τ) is smallest for τ = 90-100° and largest for τ = 0°; the corresponding bond distance variation amounts to 13 pm or 6%. The height of the torsional cis-barrier is estimated from the enthalpy of formation of gaseous S7 as equal to or smaller than 24 kJ/mol.Keywords
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