Abstract
Protonation of triethyl (2-pyridylimido)phosphates has been studied by potentiometric titration in nitromethane, IR and NMR spectroscopy, and X-ray structure analysis. The substances studied are protonated in one step at the N-atom of the pyridine ring. The protonated cations may be represented, according to the X-ray data, as a resonance of two structures: pyridinium and pyridoniminium; the contribution of the latter probably being considerable. Changes in spectral parameters of POEt groups upon protonation of pyridylimidophosphates (PIP) have been noted.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No 1, pp. 88–91, January, 1993.
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Amanov, R.U., Matrosov, E.I., Antipin, M.Y. et al. Protonation of triethyl (2-pyridylimido)phosphates. Russ Chem Bull 42, 77–81 (1993). https://doi.org/10.1007/BF00699979
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DOI: https://doi.org/10.1007/BF00699979