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Enthalpies and entropies of vaporization of propan-2-ol-2-methylpropan-1-ol solutions

  • Physical Chemistry of Solutions
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Abstract

P-T-x dependences are measured for the solutions of a propan-2-ol-2-methylpropan-1-ol binary system and the enthalpies and entropies of vaporization are determined. Dimerization in propan-2-ol and 2-methylpropan-1-ol is rationalized and the contribution from energy introduced by isostructural methyl groups to the enthalpy of vaporization is determined. Structural and energy analyses of solutions with networks of specific interactions are performed. The formation of heterodimers in solutions and vapors with reduced hydrogen bond energies and specific interactions with the 2s 2(C) unshared electron pairs of the carbon atoms of terminal methyl groups in ethyl and propyl fragments of propan-2-ol and 2-methylpropan-1-ol, respectively, is substantiated. The hydrogen bond energy of heterodimers is estimated.

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Authors and Affiliations

  1. Sakharov International State Ecological University, Minsk, 220070, Belarus

    A. A. Baev & A. K. Baev

Authors
  1. A. A. Baev
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  2. A. K. Baev
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Correspondence to A. A. Baev.

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Original Russian Text © A.A. Baev, A.K. Baev, 2014, published in Zhurnal Fizicheskoi Khimii, 2014, Vol. 88, No. 3, pp. 423–427.

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Baev, A.A., Baev, A.K. Enthalpies and entropies of vaporization of propan-2-ol-2-methylpropan-1-ol solutions. Russ. J. Phys. Chem. 88, 413–417 (2014). https://doi.org/10.1134/S0036024414030029

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  • DOI: https://doi.org/10.1134/S0036024414030029

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