Klamt, Andreas and Eckert, Frank and Reinisch, Jens and Wichmann, Karin (2016) Prediction of cyclohexane-water distribution coefficients with COSMO-RS on the SAMPL5 data set. JOURNAL OF COMPUTER-AIDED MOLECULAR DESIGN, 30 (11). pp. 959-967. ISSN 0920-654X, 1573-4951
Full text not available from this repository. (Request a copy)Abstract
The Conductor-Like-Screening-Model for Real Solvents (COSMO-RS) method has been used for the blind prediction of cyclohexane-water distribution coefficients logD within the SAMPL challenge. The partition coefficient logP of the neutral species was calculated first and then corrected for dissociation or protonation, as appropriate for acidic or basic solutes, to obtain the cyclohexane-water logD. Using the latest version of the COSMOtherm implementation, this approach in combination with a rigorous conformational sampling yielded a predictive accuracy of 2.11 log units (RMSD) for the 53 compounds of the blind prediction dataset. By that it was the most accurate of all contest submissions and it also achieved the best rank order. The RMSD mainly arises from a group of outliers in the negative logD range, which at least partly may arise from dimerization or other experimental problems coming up for very polar molecules in very non-polar solvents.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ENERGIES; MODEL; Solvation; Distribution coefficients; COSMO-RS; SAMPL5; Molecular modeling; Molecular simulation |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Apr 2019 07:05 |
| Last Modified: | 24 Apr 2019 07:05 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3986 |
Actions (login required)
 |
View Item |
