Prediction of the acidities of organic bases in aqueous solution using AM1 COSMO solvation model

Guven, A; Yekeler, H; Ozkan, R

doi:10.1016/s0166-1280(99)00271-7

Prediction of the acidities of organic bases in aqueous solution using AM1 COSMO solvation model

Atıf İçin Kopyala

Guven A., Yekeler H., Ozkan R.

JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM, cilt.499, ss.13-19, 2000 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 499
Basım Tarihi: 2000
Doi Numarası: 10.1016/s0166-1280(99)00271-7
Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.13-19
Sivas Cumhuriyet Üniversitesi Adresli: Hayır

Özet

Potentially tautomeric pyrazole-3-ones were studied, in order to predict their tautomeric equilibrium constants and pK(a) values, using the semiempirical AM1 COSMO solvation model at the SCF level in aqueous solution. Syn and anti conformers of the hydroxy form were also investigated to find a more stable form. The oxo forms have been found to be more stable than the hydroxy ones. The results obtained from the tautomeric equilibria and acidity calculations are in good agreement with experimental data. (C) 2000 Elsevier Science B.V. All rights reserved.