Abstract
The values of the gas-chromatographic indicator reflecting the capacity of analytes for self-association in pure liquids, δT b.p., were estimated for C1–C9 and C11 n-alkanols by capillary gas chromatography on a nonpolar stationary phase under isothermal conditions. The δT b.p. values ofn-alkanols, found as the difference between the boiling points measured directly and those calculated from GC data, are correlated with thermodynamic characteristics of the formation ofn-alkanol associates in pure liquids. Usingn-alkanols as analytes with insignificant temperature increments of the retention indices, it was shown that the δT b.p. values can be determined under conditions used in gas chromatography with temperature programming. In this way a single chromatographic run can be used to compare the capacities for self-association of analytes boiling over a wide temperature range. The C2–C9 n-alkanethiols, which are not associated in neat liquids, have negative δT b.p. values. An interpretation of this finding is proposed.
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Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 2, pp. 315–318 February, 2000.
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Golovnya, R.V., Kuz'menko, T.E. & Samusenko, A.L. Gas-chromatographic method of evaluation ofn-alkanol ability for self-association in pure liquid. Russ Chem Bull 49, 317–320 (2000). https://doi.org/10.1007/BF02494680
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DOI: https://doi.org/10.1007/BF02494680