Conclusions
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1.
The IR spectra of solid hydroxyethylethylenediaminetriacetic acid (HEDTA) and its potassium salts and their deutero derivatives were investigated.
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2.
From an analysis of the characteristic frequencies of the C-O, C-H, O-H, and N-H bonds it follows that HEDTA and its acid potassium salts have a betaine structure.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 782–786, April, 1975.
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Filippova, É.D., Mitrofanova, N.D., Martynenko, L.I. et al. IR-spectroscopic investigation of hydroxyethylethylenediaminetriacetic acid and its potassium salt. Russ Chem Bull 24, 705–708 (1975). https://doi.org/10.1007/BF00920678
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DOI: https://doi.org/10.1007/BF00920678