Molecular modelling, spectroscopic characterization and nonlinear optical analysis on N-Acetyl-DL-methionine



Título del documento: Molecular modelling, spectroscopic characterization and nonlinear optical analysis on N-Acetyl-DL-methionine
Revue: Revista mexicana de física
Base de datos: PERIÓDICA
Número de sistema: 000453984
ISSN: 0035-001X
Autores: 1
2
2
3
2
Instituciones: 1Beykent University, School of Health Sciences, Estambul. Turquía
2Sakarya University, Faculty of Arts and Sciences, Sakarya. Turquía
3Kocaeli University, Faculty of Arts and Sciences, Kocaeli. Turquía
Año:
Periodo: Nov-Dic
Volumen: 66
Número: 6
Paginación: 749-760
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, teórico
Resumen en inglés In this present methodical study, besed on the density functional theory (DFT), the first-principles calculations have been employed successfully to study the structural and electronic properties of N-acetyl-DL-methionine (C7H13NO3S) which is a derivative of DL-methionine which is also known as DL-2-amino-4-methyl-thiobutanoic acid. Optimized molecular structure, vibrational frequencies, and also 13C and 1H NMR chemical shift values of the title compound are provided in a detailed manner by using B3LYP and HSEH1PBE functionals by applying 6-311++G(d,p) basis set for calculations using Gaussian 09W program. The comparison of the calculated values with the experimental values provides important information about the title compound. Besides the electronic properties (UV-Vis calculations) of the title compound, such as HOMO-LUMO energy values and energy gap, absorption wavelengths, oscillator strengths, were performed basing on the optimized structure in the gas phase. Moreover, the molecular electrostatic potential surface, dipole moment, nonlinear optical properties, linear polarizabilities, and first hyperpolarizabilities and chemical parameters have also been studied
Disciplinas: Física y astronomía
Palabras clave: Optica,
N-acetil-DL-metionina,
Modelación molecular,
Espectroscopía,
Teoría de la densidad funcional,
Optica no lineal
Keyword: Optics,
N-Acetyl-DL-methionine,
Molecular modelling,
Spectroscopy,
Density functional theory (DFT),
Nonlinear optic
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