Effect of ammonia on the gas-phase hydration of the common atmospheric ion HSO 4-

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Abstract

Hydration directly affects the mobility, thermodynamic properties, lifetime and nucleation rates of atmospheric ions. In the present study, the role of ammonia on the formation of hydrogen bonded complexes of the common atmospheric hydrogensulfate (HSO 4) ion with water has been investigated using the Density Functional Theory (DFT). Our findings rule out the stabilizing effect of ammonia on the formation of negatively charged cluster hydrates and show clearly that the conventional (classical) treatment of ionic clusters as presumably more stable compared to neutrals may not be applicable to pre-nucleation clusters. These considerations lead us to conclude that not only quantitative but also qualitative assessment of the relative thermodynamic stability of atmospheric clusters requires a quantum-chemical treatment. © 2008 by the authors; licensee Molecular Diversity Preservation International.

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Nadykto, A. B., Yu, F., & Herb, J. (2008). Effect of ammonia on the gas-phase hydration of the common atmospheric ion HSO 4-. International Journal of Molecular Sciences, 9(11), 2184–2193. https://doi.org/10.3390/ijms9112184

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