Abstract
The Multiple Attenuated Total Reflection (MATR) IR-spectra of HCl solutions in DMF (0–48.55% HCl) were recorded and analyzed in the range of 900–4000 cm−1. Depending on the ratio of compounds, a variety of complexes (2 DMF) · HCl (1), DMF · HCl (2), DMF · (2 HCl) (3) are formed in the system. The concentrations of the complexes were measured. Complex2 possesses a quasi-ionic structure Me2NHCO...H...Cl. The addition of a DMF molecule to complex2 with formation of complex1 does not result in destruction of the quasi-ionic structure of the DMF-HCl bond. In excess HCl, this structure is decomposed and the complex with the ion pair structure Me2NHCOH+ (ClHCl)− is formed.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1577–1582, September, 1993.
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Maiorov, V.D., Sysoeva, S.G., Temkin, O.N. et al. IR Study of ion-molecular interactions in a DMF-HCl system. Russ Chem Bull 42, 1511–1516 (1993). https://doi.org/10.1007/BF00699185
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DOI: https://doi.org/10.1007/BF00699185