| Yazarlar |
Dr. Öğr. Üyesi Fatemeh MOLLAAMIN
Kastamonu Üniversitesi, Türkiye |
| Özet |
| The potential energy of Alanine-Methionine was studied on the basis of ab initio calculations performed by using the HF,DFT-B3LYP and MP2 methods with 6-31G and 6-31G* basis sets. The following trends with basis set can be deduced for the depth (De= -Eint (Re) = -Emin) of the potential well of the calculated intermolecular potential energy surfaces (IPSs). In ab initio calculations the basis set superposition error (BSSE) is important. This error can be eliminated to some extent by using the counterpoise correction method (CPC). In this work, to estimate the interaction energy U(r) in the system we use the Morse potential model, and we estimate adjustable parameters used in the Morse model and theoretically second virial coefficient for the system. To determine the second virial coefficients B2, U(r) is used to obtained the model's parameters over the range of temperatures of interest. © 2011 Academic Journals. |
| Anahtar Kelimeler |
| Basis set superposition error | Counterpoise correction method | HF and DFT-B3LYP method | Ips | MP2 | Second virial coefficient |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SCOPUS dergilerinde yayımlanan tam makale |
| Dergi Adı | International Journal of Physical Sciences |
| Dergi ISSN | 1992-1950 |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Makale Dili | İngilizce |
| Basım Tarihi | 01-2011 |
| Cilt No | 6 |
| Sayı | 1 |
| Sayfalar | 121 / 127 |
| Makale Linki | http://www.academicjournals.org/IJPS |
