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6-Phenyl-3-(4-pyridyl)-1,2,4-triazolo-[3,4-b][1,3,4]thiadiazole: Synthesis, experimental, theoretical characterization and biological activities        
Yazarlar
Ahmet Cansız
Fırat Üniversitesi, Türkiye
Ahmet Çetin
Bingöl Üniversitesi, Türkiye
Öğr. Gör. Dr. Cahit ÖREK
Kastamonu Üniversitesi, Türkiye
Mustafa Karatepe
Fırat Üniversitesi, Türkiye
Kamiran Saraç
Bitlis Eren Üniversitesi, Türkiye
Alper Kuş
Pelin Koparır
Özet
The molecular geometry, vibrational frequencies, and gauge including atomic orbital (GIAO) 1H and 13C NMR chemical shift values of the title compound in the ground state have been calculated using the Hartree-Fock (HF) and density functional theory (DFT) methods with 6-31G(d) basis sets, and compared with the experimental data. The calculated results show that the optimized geometries can well reproduce the crystal structural parameters and the theoretical vibrational frequencies, and 1H and 13C NMR chemical shift values show good agreement with experimental data. To determine conformational flexibility, molecular energy profile of the title compound was obtained by HF/6-31G(d) and (DFT/B3LYP) calculations with respect to selected degree of torsional freedom, which was varied from -180° to +180° in steps of 10°. The energetic behavior of the title compound in solvent media was examined using the B3LYP method with the 6-31G(d) basis set by applying the Onsager and the polarizable continuum model (PCM). The results obtained with these methods reveal that the PCM method provided more stable structure than Onsager's method. The title compound has been tested in vitro for biological effects. © 2012 Elsevier B.V. All rights reserved.
Anahtar Kelimeler
6-Phenyl-3-(4-pyridyl)-1,2,4-triazolo-[3,4-b][1,3,4]thiadiazole,DFT,HF,NMR,IR spectra,Biological effects
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Dergi ISSN 1386-1425
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 11-2012
Cilt No 97
Sayfalar 606 / 615
Doi Numarası 10.1016/j.saa.2012.07.016
Makale Linki http://dx.doi.org/10.1016/j.saa.2012.07.016