Conclusions
Using a semiempirical quantum chemical approach (EHM), a study was made of the effect of protonating the benzene ring in phenol and the methylphenols on the redistribution of the charge density, and it was shown that the formedσ-complex partially retains an aromatic character.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 922–925, April, 1975.
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Abronin, I.A., Gagarin, S.G. & Zhidomirov, G.M. Effect of protonation of benzene ring on chemical shifts of aromatic protons. Russ Chem Bull 24, 836–838 (1975). https://doi.org/10.1007/BF00920704
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DOI: https://doi.org/10.1007/BF00920704