Conclusion
By high-resolution NMR in the solid it was possible to demonstrate unambiguously that the nitrogen atom is protonated through the phosphono group in the investigated compounds. The order of substitution of the protons in N-PMG was established from the obtained data on the anisotropy of the31P chemical shift in variously substituted salts of N-PMG with CHA. Slow rotation of the phosphono group about the P−C bond was detected during investigation of the hydrochlorides.
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All-Union Scientific-Research Technological Institute of Herbicides and Plant Growth Regulators. Translated from Zhurnal Strukturnoi Khimii, Vol. 27, No. 3, pp. 60–64, May–June, 1986.
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Khizbullin, F.F., Strunin, B.P., Maslennikov, E.I. et al. Investigation of some aminophosphonates by high-resolution NMR in the solid. J Struct Chem 27, 394–398 (1986). https://doi.org/10.1007/BF00751817
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DOI: https://doi.org/10.1007/BF00751817