Conclusions
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1.
With the complex use of the methods of dipole moments, the Kerr effect, the Cotton-Mouton effect, and molecular mechanics, it was shown that the 2-halogenated ethylbenzenes studied in solutions of CC14 are an equilibrium mixture of approximately equally populated trans and gauche retainers on the C-C bond.
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2.
In both conformations, the plane of the aromatic ring is close to shielding of the C-H bond.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2014–2019, September, 1986.
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Kataev, V.E., Vul'fson, S.G., Dianova, O.M. et al. Steric structure of some 2-halogenated ethylbenzenes. Russ Chem Bull 35, 1831–1836 (1986). https://doi.org/10.1007/BF00954014
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DOI: https://doi.org/10.1007/BF00954014