experimental computational studies pyrazole de alyar hamit (4 résultats)

Paperback. Etat : Brand New. 52 pages. 8.66x5.91x0.12 inches. In Stock.

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A new 4-methyl-3a,4-dihydrochromeno[4,3-c]pyrazol-3(2H)-one (4-mcpy), has been synthesized for the first time. The structure of 4-mcpy was investigated using elemental analysis, spectral (IR, 1H /13C- NMR) measurements. In addition, molecular structure of the 4-mcpy was determined by single crystal X-ray diffraction technique and found that the compound crystallizes in triclinic, space group P-1. 1H and 13C shielding tensors for crystal structure were calculated with GIAO/DFT/B3LYP/6-311++G(d,p) methods in DMSO. The structure of 4-mcpy is optimized using Density Functional Theory (DFT) method. The vibrational band assignments were performed at B3LYP/6-311++G(d,p) theory level combined with scaled quantum mechanics force field (SQMFF) methodology. The theoretical IR frequencies are found to be in good agreement with the experimental IR frequencies. Nonlinear optical (NLO) behaviour of 4-mcpy is also examined by the theoretically predicted values of dipole moment (mi), polarizability ( 0) and first hyperpolarizability (betatot). 52 pp. Englisch.

Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - A new 4-methyl-3a,4-dihydrochromeno[4,3-c]pyrazol-3(2H)-one (4-mcpy), has been synthesized for the first time. The structure of 4-mcpy was investigated using elemental analysis, spectral (IR, 1H /13C- NMR) measurements. In addition, molecular structure of the 4-mcpy was determined by single crystal X-ray diffraction technique and found that the compound crystallizes in triclinic, space group P-1. 1H and 13C shielding tensors for crystal structure were calculated with GIAO/DFT/B3LYP/6-311++G(d,p) methods in DMSO. The structure of 4-mcpy is optimized using Density Functional Theory (DFT) method. The vibrational band assignments were performed at B3LYP/6-311++G(d,p) theory level combined with scaled quantum mechanics force field (SQMFF) methodology. The theoretical IR frequencies are found to be in good agreement with the experimental IR frequencies. Nonlinear optical (NLO) behaviour of 4-mcpy is also examined by the theoretically predicted values of dipole moment (mi), polarizability ( 0) and first hyperpolarizability (betatot).

Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Alyar HamitHamit Alyar was born in Reyhanli,Turkey in 1971. He received his B.A. from Atatuerk University in 1992 and his Ph.D. from Gazi University in 2005. Appointed assistant professor at the Dumlupinar University, he worked there .