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The determination of thermodynamics of oxygen complexes of anions of sulfur dioxide and fluoronitrobenzenes using atmospheric pressure ionization mass spectrometry

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Abstract

The thermodynamic properties of oxygen complexes of the negative ions of 1-fluoro-2,4-dinitrobenzene (FDNB), 1,5-difluoro-2,4-dinitrobenzene (DFDNB), and sulfur dioxide have been determined by measuring the temperature dependence of the pertinent ion ratios by using a mass spectrometer equipped with a63Ni atmospheric pressure ionization source. The values of -ΔH° and -ΔS°are SO 2 −(O2), 101 ± 2.1 kJ mole1 and 121 ± 3.8 J/K-mole; FDNB−(O2), 51.5 ±3.4 kJ mole−1 ± 9.2 J/K-mole; and DFDNB−(O2), 65.7 ± 0.4 kJ mole−2 and 110 ± 5.0 J/K-mole.

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Authors and Affiliations

  1. Chemistry Department, University of Houston, 4800 Calhoun Street, 77204-5641, Houston, Texas

    Lih-Ren Shuie, Ela Desai D'sa & Wayne E. Wentworth

  2. School of Natural and Applied Sciences, University of Houston Clear Lake, Houston, Texas

    Edward C. M. Chen

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  1. Lih-Ren Shuie
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  2. Ela Desai D'sa
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  3. Wayne E. Wentworth
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  4. Edward C. M. Chen
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Shuie, LR., D'sa, E.D., Wentworth, W.E. et al. The determination of thermodynamics of oxygen complexes of anions of sulfur dioxide and fluoronitrobenzenes using atmospheric pressure ionization mass spectrometry. Struct Chem 4, 213–218 (1993). https://doi.org/10.1007/BF00673696

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  • DOI: https://doi.org/10.1007/BF00673696

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