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untersuchung der Molekularassoziation des (p-Chlorbenzolsulfonamido)benzolthiophosphonsäure-O-äthylesters mit Hilfe der IR-Spektroskopie

Heteroorganic compounds, XLV1: Molecular association of O-Ethyl (p-chlorobenzenesulfonamido)benzenethiophosphonate

Über heteroorganische Verbindungen, 45. Mitt.

  • Anorganische, Struktur- und Physikalische Chemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Abstract

O-Ethyl (p-chlorobenzenesulfonamido)benzenethiophosphonate (1) is shown to be associated by hydrogen-bonding by means of its i.r. spectrum in CCl4 solution. Quantitative examination allows to determine the dissociation konstantK, the temperature dependence of which leads to a ΔH-value of 8.3 kcal/mole. From this value it is concluded that the associated molecules are cyclic dimers2. The comparison of the ΔH- and pK-values with the corresponding data of other compounds which form cyclic dimers, shows that the strength of the hydrogen bonding is greater in those compounds which possess smaller pK-values.

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Authors and Affiliations

  1. Chemisches Institut des Unterrichtsministeriums, Cluj (Klausenburg), Rumänien

    Lucreţia Almasi, N. Popovici, A. Hantz & Erika Hamburg

Authors
  1. Lucreţia Almasi
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  2. N. Popovici
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  3. A. Hantz
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  4. Erika Hamburg
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Additional information

XLIV. Mitt.:L. Almasi, N. Popovici undJ. Zsakó, Chem. Ber.106, 1384 (1973).

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Almasi, L., Popovici, N., Hantz, A. et al. untersuchung der Molekularassoziation des (p-Chlorbenzolsulfonamido)benzolthiophosphonsäure-O-äthylesters mit Hilfe der IR-Spektroskopie. Monatshefte für Chemie 104, 1360–1364 (1973). https://doi.org/10.1007/BF00910053

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  • DOI: https://doi.org/10.1007/BF00910053

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