Conclusions
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1.
The IR spectra of solidβ-hydroxyethyliminodiacetic acid (H2X), its acid (KHX) and neutral (K2X) potassium salts, as well as their deutero-derivatives, were studied.
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2.
From an analysis of the vibration frequencies of the C-O, C-N, C-H, and N-H bonds, a betaine structure of H2X and its acid potassium salt follows.
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3.
The values of the vibration frequencies of the alcohol O-H bond in the IR spectra of H2X and KHX indicate the participation of a hydroxyl group in the formation of hydrogen bonds.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1706–1710, August, 1974.
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Filippova, É.D., Mitrofanova, N.D., Martynenko, L.I. et al. IR spectroscopic investigation of solid β-hydroxyethyliminodiacetic acid and its potassium salt. Russ Chem Bull 23, 1630–1633 (1974). https://doi.org/10.1007/BF00923177
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DOI: https://doi.org/10.1007/BF00923177