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  • 1
    Electronic Resource
    Electronic Resource
    Solvent effect on catalytic properties of the HCI-DMF-1,1,2,2-tetrachloroethane system (1996)
    Springer
    Russian chemical bulletin 45 (1996), S. 1376-1379 
    Details
    ISSN: 1573-9171
    Keywords: catalytic activity ; basicity ; solvation ; hydrogen chloride ; N,N-dimethylformamide ; 1,1,2,2-tetrachloroethane ; solutions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Ionization of 2- and 3-nitroanilines was studied in HCl-DMF-1,1,2,2-tetrachloro-ethane (TCE) solutions at 25 °C. The ionization capability of the medium and basicity constants pK i of indicators change depending on the ratio of the components. The numerical values of pK i are found to depend on the analytical composition of the DMF-TCE solvent. The solvent effect on pK i is associated with a change in the solvation of the nonionized form of the indicators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434215
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of 1,1,2,2-tetrachloroethane on the ionizing ability of complexes of HCl with DMF (1996)
    Springer
    Russian chemical bulletin 45 (1996), S. 69-73 
    Details
    ISSN: 1573-9171
    Keywords: acidity, the indicator method ; hydrogen chloride,N,N-dimethylformamide, complexes ; 1,1,2,2-tetrachloroethane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The acidity function (H o) of solutions of HCI (0–7.1 mol L−1) in an equimolar mixture of DMF-1,1,2,2-tetrachloroethane (TCE) has been determined by the indicator method at 25 °C. Data on the relative ionizing activity of complexes of HCI with DMF with various compositions and structures have been obtained. In the ternary system HCI-DMF-TCE, the ionizing ability of the complexes of DMF with HCI of the compositions 2 : 1 and 1 : 1 with a quasiionic structure decreases compared to the HCI-DMF system, and that of the complex of the composition DMF · 2HC1 with a structure of an ion pair Me2NHCOH+ · (CIHCI)− with a strong centrosymmetrical H-bond in the anion increases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01433735
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    Paper (German National Licenses)
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