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- W2549613419 endingPage "12668" @default.
- W2549613419 startingPage "12660" @default.
- W2549613419 abstract "The new continuum solvation model, composite method for implicit representation of solvent (CMIRS), proposed by Pomogaeva and Chipman and implemented in GAMESS was parametrized for methanol solvent, with the aim of using it for ionic reactions in solution. The model was tested for predicting single-ion solvation free energy, pKa of acids and protonated bases, and the activation free-energy barriers of SN2 and SNAr reactions in methanol. A comparison was performed with other continuum models, such as SMD, SM8, and COSMO-RS. For a prediction of pKa and free-energy barriers, the order of performance was CMIRS > COSMO-RS > SMD > SM8. In particular, the CMIRS model is much superior to the other continuum models for predicting pKa of acids (without empirical corrections) and is able to evenly describe hard ions like methoxide and charge-dispersed ions like 2,4,6-trinitrophenol. On the basis of our results, we suggest that the field-extremum contribution, present in CMIRS, should be included in continuum solvation models, which can result in substantial improvement in the modeling of ionic reactions in solution." @default.
- W2549613419 created "2016-11-30" @default.
- W2549613419 creator A5014644398 @default.
- W2549613419 creator A5064248499 @default.
- W2549613419 creator A5069253483 @default.
- W2549613419 date "2016-12-05" @default.
- W2549613419 modified "2023-10-17" @default.
- W2549613419 title "CMIRS Solvation Model for Methanol: Parametrization, Testing, and Comparison with SMD, SM8, and COSMO-RS" @default.
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