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Citation: CAO Chen-Zhong, LIU Jin-Ling. Correlation between the Ionization Potential and Enthalpy of Formation for Alkanes[J]. Acta Physico-Chimica Sinica, ;2007, 23(06): 955-958. doi: 10.3866/PKU.WHXB20070632 shu

Correlation between the Ionization Potential and Enthalpy of Formation for Alkanes

1.

School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan Province, P. R. China

Received Date: 15 December 2006
Available Online: 29 April 2007

Correlation equation between the enthalpy of formation and the ionization potential was deduced for alkanes, based on the relationship between the heat of formation and the valence electronic energy change in the formation of a compound from its component atoms, and the relationship between the first ionization potential and the average valence electronic energy. The proposed correlation model was confirmed by taking 21 alkanes as model compounds and correlating their experimental ionization potentials to their standard enthalpies of formation, in which the expression with od correlation (correlation coefficient R is 0.9999) and lower error (standard derivation is 0.03 eV) was obtained. Using the obtained correlation expression, the ionization potentials of a set of alkanes were predicted with their experimental enthalpies of formation.
- Alkane; Energy of valence electron; Enthalpy of formation; Ionization potential; Polarizability effect
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