Int. J. Mol. Sci. 2009, 10(2), 507-517; doi:10.3390/ijms10020507
Communication

Anomalously Strong Effect of the Ion Sign on the Thermochemistry of Hydrogen Bonded Aqueous Clusters of Identical Chemical Composition

1,* email, 1 and 2
Received: 23 May 2008; in revised form: 5 January 2009 / Accepted: 7 January 2009 / Published: 5 February 2009
(This article belongs to the Special Issue The Chemical Bond and Bonding)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The sign preference of hydrogen bonded aqueous ionic clusters Χ±(H2O)i (n =1-5, Χ = F; Cl; Br) has been investigated using the Density Functional Theory and ab initio MP2 method. The present study indicates the anomalously large difference in formation free energies between cations and anions of identical chemical composition. The effect of vibrational anharmonicity on stepwise Gibbs free energy changes has been investigated, and possible uncertainties associated with the harmonic treatment of vibrational spectra have been discussed.
Keywords: Ionic clusters; DFT; ab initio; sign preference; Gibbs free energies; hydrogen bonded complexes
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MDPI and ACS Style

Nadykto, A.B.; Yu, F.; Al Natsheh, A. Anomalously Strong Effect of the Ion Sign on the Thermochemistry of Hydrogen Bonded Aqueous Clusters of Identical Chemical Composition. Int. J. Mol. Sci. 2009, 10, 507-517.

AMA Style

Nadykto AB, Yu F, Al Natsheh A. Anomalously Strong Effect of the Ion Sign on the Thermochemistry of Hydrogen Bonded Aqueous Clusters of Identical Chemical Composition. International Journal of Molecular Sciences. 2009; 10(2):507-517.

Chicago/Turabian Style

Nadykto, Alexey B.; Yu, Fangqun; Al Natsheh, Anas. 2009. "Anomalously Strong Effect of the Ion Sign on the Thermochemistry of Hydrogen Bonded Aqueous Clusters of Identical Chemical Composition." Int. J. Mol. Sci. 10, no. 2: 507-517.

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