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- Title
The Ambivalent Nature of Halogenated Tropone Derivatives: Dihalocycloheptatriene vs. Halotropylium Halide.
- Authors
Jandl, Christian; Mayer, David C.; Pöthig, Alexander
- Abstract
Although dichlorocycloheptatriene and dibromocycloheptatriene have been known for a long time, their exact structure remained uncertain so far. In this computational and crystallographic study, we elucidate the nature of these compounds in solution and in the solid state. In the latter case, both compounds exist as halotropylium halides, which also feature Br–Br halogen bonds in the case of bromotropylium bromide. In solution, there is a highly dynamic equilibrium involving both the ionic halotropylium halide form and different isomers of the covalent dihalocycloheptatriene form. The presence of the 7,7- dihalocycloheptatriene isomer, which until now has been the most commonly used representation in literature, can be excluded.
- Subjects
AROMATIC compound derivatives; TROPONES; HALOGENATION; CYCLOHEPTATRIENES; CRYSTALLOGRAPHY; HYDROCARBONS
- Publication
European Journal of Organic Chemistry, 2017, Vol 2017, Issue 29, p4255
- ISSN
1434-193X
- Publication type
Article
- DOI
10.1002/ejoc.201700692