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  • 1
    Electronic Resource
    Electronic Resource
    IR Study of ion-molecular interactions in a DMF-HCl system (1993)
    Springer
    Russian chemical bulletin 42 (1993), S. 1511-1516 
    Details
    ISSN: 1573-9171
    Keywords: IR-spectra ; acid-base interactions ; hydrogen bond ; solutions ; hydrochloric acid ; dimethylformamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00699185
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  • 2
    Electronic Resource
    Electronic Resource
    The acidity functionsH 0 s of HCl solutions in EtOH with low water content (1994)
    Springer
    Russian chemical bulletin 43 (1994), S. 1626-1629 
    Details
    ISSN: 1573-9171
    Keywords: acidity ; indicator method ; hydrochloric acid ; ethanol ; water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The acidity functionsH 0 s of HCl solutions in EtOH-H2O solvents containing 1.09, 3.0, and 5.0% water have been measured at 25 and 40 °C by the indicator method. The concentration of HCl changes from 10−2 to 36m. Nitroanilines, for which a protonation mechanism is realized in the studied systems, were used as indicators. For each solvent,H 0 s is temperature independent atm HCl 〈 4, and acidity atm HCl 〉 4 mol L−1 increases more rapidly at 25 °C than at 40 °C. The acidity functions of aqueous and water-ethanol solutions of HCl were compared, and the concentrations of proton solvates of different compositions and their relative protonating ability were evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00703474
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