Abstract
We have investigated the influence of volumetric (heterocyclic) substituents on the PMR characteristics of substituted nitroanilines depending on their position relative to the nitro group. Using quantum chemical simulation (the PM3 method), data on the position of the proton signals in the PMR spectra of 3-nitro-6-piperidinoaniline and 3-nitro-4-piperidinoaniline are interpreted. It is established that for structures in which the nitro group is removed from the benzene ring plane it does not appear possible to calculate the PMR spectrum using the Beeby–Sternhell increments.
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Begunov, R.S., Orlova, T.N., Taranova, O.V. et al. Electronic Structure and PMR Characteristics of Substituted Nitroanilines. Journal of Applied Spectroscopy 69, 807–810 (2002). https://doi.org/10.1023/A:1022441932591
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DOI: https://doi.org/10.1023/A:1022441932591