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Title: Refined SMD Parameters for Bromine and Iodine Accurately Model Halogen-Bonding Interactions in Solution

Journal Article · · Chemistry - A European Journal

Motivated by the need to calculate liquid-phase free energies of species and equilibria involving halogen bonding, we used recent experimental data to optimize new Coulomb radii for Br and I for use in the SMD universal solvation model for calculating free energies of solvation. The use of the SMD model with these parameters for Br and I and the SMD values of all other parameters is called SMD18. After parametrization, the SMD18 model was tested for data not used in the parametrization. These data are standard-state free energies (equivalent to equilibrium constants) for 18 ionic equilibria involve Cl, Br, and I halogen bonding in acetonitile, and the agreement of theory and experiment is satisfactory. The SMD18 model is then used to compare hydrogen bonding to halogen bonding and to reassess the interpretation of recent experiments.

Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States). Nanoporous Materials Genome Center
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
SC0008688
OSTI ID:
1495024
Journal Information:
Chemistry - A European Journal, Journal Name: Chemistry - A European Journal Journal Issue: 60 Vol. 24; ISSN 0947-6539
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

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The Fluorine gauche Effect and a Comparison with Other Halogens in 2-Halofluoroethanes and 2-Haloethanols: The Fluorine gauche Effect and a Comparison with Other Halogens in 2-Halofluoroethanes and 2-Haloethanols journal September 2019
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Effects of dynamic pedal motion and static disorder on thermal expansion within halogen-bonded co-crystals journal January 2019