Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 25, Issue 3, Pages 2595-2605Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2cp04557e
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In this study, the impact of external electric fields on the molecular structure and reactivity properties of benzoic acid was systematically investigated. The results showed that the aromaticity and acidity properties of benzoic acid undergo changes under different strengths of external electric fields, which can be explained by variations in reactivity descriptors and partial charges. This study provides novel insights into the influence of external fields on electronic properties and serves as a guide for future research in this area.
The impact of external fields on the molecular structure and reactivity properties has been of considerable interest in the recent literature. Benzoic acid as one of the most widely used compounds in medicinal and materials sciences is known for its dual propensity in aromaticity and acidity. In this work, we systematically investigate the impact of a uniform external electric field on these properties. We apply density functional theory, conceptual density functional theory, and an information-theoretic approach to appreciate the change pattern of aromaticity and acidity properties in external fields with different strengths. Our results show that they possess different change patterns under external fields, which can be satisfactorily rationalized by variations in reactivity descriptors and partial charges. The surprising yet novel results from this study should enrich the body of our knowledge about the impact of external fields for different kinds of electronic properties and provide guidance and foundation for future studies of this phenomenon in other molecular systems.
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