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Paradigms and paradoxes: Hess’ law and the thermodynamic validity of Jolly’s method for estimating bond dissociation energies

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Abstract

This study evaluates Jolly’s method to estimate the difference in homolytic bond dissociation energy between two isoelectronic molecules by the use of atomic and ionic electronegativities. The use of intermediate species as an energetic “stepping stone” between the two diatomic species in question is discussed, particularly within the context of Hess’ law. We also show a sample calculation for a pair of diatomic species that is fully consistent with data from atomic physics.

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References

  1. Jolly WL (1970) A new method for the estimation of dissociation energies and its application to the correlation of core-electron binding energies obtained from X-ray photoelectron spectra. J Am Chem Soc 92:3260–3265

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Author notes

  1. Drew Z. Spera

    Present address: Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23220, USA

Authors and Affiliations

  1. Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, Baltimore, MD, 21250, USA

    Drew Z. Spera & Joel F. Liebman

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  1. Drew Z. Spera
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  2. Joel F. Liebman
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Correspondence to Joel F. Liebman.

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The authors declare that they have no conflict of interest.

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Spera, D.Z., Liebman, J.F. Paradigms and paradoxes: Hess’ law and the thermodynamic validity of Jolly’s method for estimating bond dissociation energies. Struct Chem 29, 1589–1591 (2018). https://doi.org/10.1007/s11224-018-1195-0

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  • DOI: https://doi.org/10.1007/s11224-018-1195-0

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