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A theoretical study on the pyrolysis of perfluorobutanoic acid as a model compound for perfluoroalkyl acids
Journal article   Peer reviewed

A theoretical study on the pyrolysis of perfluorobutanoic acid as a model compound for perfluoroalkyl acids

M. Altarawneh
Tetrahedron Letters, Vol.53(32), pp.4070-4073
2012
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Abstract

The potential energy surface is mapped out for all plausible reactions in the self-decomposition of perfluorobutanoic acid (CF 3CF 2CF 2COOH) as a model compound for the notoriously toxic and bio-accumulative perfluoroalkyl acids. Initial decomposition of perfluorobutanoic acid is found to be controlled by HF elimination and the formation of an α-lactone intermediate. The fate of this intermediate is predicted to be dominated by two competing channels, namely formation of pentafluoropropanoyl fluoride (CF 3CF 2COF) and the closed-shell singlet CF 3CF 2CF:. Direct elimination of CO 2 through decarboxylation is found to be retarded by strong hyperconjugation effects induced by fluorine atoms on the carbon chain. The results presented herein provide insightful information towards a comprehensive understanding of the decomposition of perfluoroalkyl acids in thermal systems.

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#3 Good Health and Well-Being
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Source: InCites

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Citation topics
3 Agriculture, Environment & Ecology
3.60 Herbicides, Pesticides & Ground Poisoning
3.60.1998 PFAS Toxicity
Web Of Science research areas
Chemistry, Organic
ESI research areas
Chemistry
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