Abstract
The CNDO calculation of the charge densities and bond orders show a distinction between two extreme geometrical configurations of the benzenesulphonic acid, but the barrier to internal rotation of the sulphonic group about the C-S bond, calculated by the same method, has revealed that they are energetically equivalent.
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Ghirvu, C.I. CNDO calculation of the π-electronic structure and barrier to internal rotation in benzenesulphonic acid. Theoret. Chim. Acta 30, 115–117 (1973). https://doi.org/10.1007/BF00527638
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DOI: https://doi.org/10.1007/BF00527638