Güncel Gönderiler: Yayın Koleksiyonu
Toplam kayıt 221, listelenen: 21-40
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An experimental and theoretical study of molecular structure and vibrational spectra of 3-and 4-pyridineboronic acid molecules by density functional theory calculations
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)The experimental and theoretical vibrational spectra of 3- and 4-pyridineboronic acids (abbreviated as p3 and p4) were studied. The Fourier transform Raman and Fourier transform infrared spectra of p3 and p4 molecules were ... -
An experimental and theoretical study of molecular structure and vibrational spectra of 2-chloronicotinic acid by density functional theory and ab initio Hartree-Fock calculations
(ELSEVIER SCIENCE BV, 2008)In this work, the Fourier transform Raman and Fourier transform infrared spectra of 2-chloronicotinic acid (2-CNA) are recorded in the solid phase. The molecular geometry, vibrational frequencies, infrared intensities and ... -
X-ray, FT-Raman, FT-IR spectra and ab initio HF, DFT calculations of 2-[(5-methylisoxazol-3-yl)amino]-2-oxo-ethyl methacrylate
(ELSEVIER SCIENCE BV, 2008)Molecular structure of methacrylate monomer, 2-[(5-methylisoxazol-3-yl)amino]-2-oxo-ethyl methacrylate (IAOEMA) was determined by X-ray diffraction analysis. The molecule (IAOEMA) crystallizes in monoclinic, space group ... -
Phase transformation of 6H-SiC at high pressure: An ab initio constant-pressure study
(EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY, 2008)We apply a constant-pressure ab initio technique to investigate the high-pressure phase transformation of 6H-SiC and show that it transforms into a rocksalt structure. This phase change proceeds in two stages: 6H-SiC is ... -
Molecular structure and vibrational spectra of 1,3-bis(4-piperidyl)propane by quantum chemical calculations
(ELSEVIER SCIENCE BV, 2008)The infrared and Raman spectra of 1,3-bis(4-piperidyl)propane molecule have been recorded between 4000-400 cm(-1) region and 3500-150 cm(-1) region, respectively. The vibrational frequencies of the molecule are investigated. ... -
Growth parameter investigation of Al(0.25)Ga(0.75)N/GaN/AlN heterostructures with Hall effect measurements
(IOP PUBLISHING LTD, 2008)Hall effect measurements on unintentionally doped Al(0.25)Ga(0.75)N/GaN/AlN heterostructures grown by metal organic chemical vapor deposition (MOCVD) were carried out as a function of temperature (20-300 K) and magnetic ... -
Electrical properties of TiO(2) thin films
(ELSEVIER SCIENCE BV, 2008)The electrical properties of n-type titanium dioxide thin films deposited by magnetron-sputtering method have been investigated by temperature-dependent conductivity. We observed that the temperature dependence of the ... -
Molecular structure and vibrational spectra of 1,3-bis(4-pyridyl)propane by quantum chemical calculations
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)The experimental and theoretical study on the structures and vibrations of 1,3-bis(4-pyridyl)propane are presented. The FFAR and Raman spectra of molecule have been measured. The optimized geometric bond lengths have been ... -
Molecular structure and vibrational spectra of 2-amino-5-methyl pyridine and 2-amino-6-methyl pyridine by density functional methods
(ELSEVIER SCIENCE BV, 2008)The Fourier transform Raman (3500-50 cm(-1)) and Fourier transform infrared (4000-400 cm(-1)) spectra of 2-amino-5-methylpyridine and 2-amino-6-methylpyridine have been measured in solid phase. The Fourier transform gas ... -
Comparison of experimental and density functional study on the molecular structure, infrared and Raman spectra and vibrational assignments of 6-chloronicotinic acid
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)The experimental and theoretical study on the structures and vibrations of 6-chloronicotinic acid (6-CNA, C(6)H(4)ClNO(2)) are presented. The Fourier transform infrared spectra (4000-50cm(-1)) and the Fourier transform ... -
An ab initio constant-pressure study of pressure-induced phase transition of MgSe
(EDP SCIENCES S A, 2008)We study the pressure-induced phase transition of MgSe using a constant-pressure ab initio technique and. find that the rocksalt-structured MgSe transforms into a FeSi-type structure. Furthermore, we. find that this phase ... -
Pressure-induced phase transformation in CdO: An ab initio constant-pressure study
(EDP SCIENCES S A, 2008)A constant-pressure ab initio technique is used to study the behavior of CdO at high pressures. A phase transformation from the NaCl-type structure to the CsCl-type structure via a rhombohedral intermediate state is ... -
FT-IR, FT-Raman, NMR spectra, and molecular structure investigation of 2,3-dibromo-N-methylmaleimide: A combined experimental and theoretical study
(ELSEVIER SCIENCE BV, 2008)In the present work, the experimental and theoretical vibrational spectra and chemical shifts of 2,3-dibromo-N-methylmaleimide (2,3DBrNMM, C(5)H(3)NO(2)Br(2)) were studied. FT-IR and FT-Raman spectra of 2,3DBrNMM in the ... -
Experimental (FT-IR and FT-Raman spectra) and theoretical (ab initio HF, DFT) study of 2-chloro-5-methylaniline
(ELSEVIER SCIENCE BV, 2008)In this work, the experimental and theoretical vibrational spectra of 2-chloro-5-methylaniline (2C15MA, C7H8NCl) were studied. FF-IR and FT-Raman spectra of 2Cl5MA in the liquid phase were recorded in the region 4000-400 ... -
Experimental (UV, NMR, IR and Raman) and theoretical spectroscopic properties of 2-chloro-6-methylaniline
(TAYLOR & FRANCIS LTD, 2009)In this work, the experimental and theoretical UV, NMR and vibrational spectra of 2-chloro-6-methylaniline (2-Cl-6-MA, C7H8NCl) were studied. The ultraviolet absorption spectra of compound that dissolved in ethanol were ... -
Molecular structure, vibrational spectra and HOMO, LUMO analysis of 4-piperidone by density functional theory and ab initio Hartree-Fock calculations
(TAYLOR & FRANCIS LTD, 2009)Vibrational frequencies and geometrical parameters of 4-piperidone (4-PID) in the ground state have been calculated by using the Hartree-Fock (HF) and density functional methods (B3LYP) with 6-311++G(d,p) and 6-311+G(3df,2p) ... -
Infrared and Raman study of some isonicotinic acid metal(II) halide and tetracyanonickelate complexes
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)In this study the M(IN)(2)Ni(CN)(4) [where M: Co, Ni, and Cd, and IN: isonicotinic acid, abbreviated to M-Ni-IN] tetracyanonickelate and some metal halide complexes with the following stoichiometries: M(IN)(G)X(2) (M: Co; ... -
Anomalous temperature dependence of the electrical resistivity in In0.17Ga0.83N
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)Resistivity and Hall effect measurements on n-type undoped In0.17Ga0.83N alloy grown by metalorganic vapor phase epitaxy (MOVPE) technique were carried out as a function of temperature (15-350 K). In0.17Ga0.83N alloy is ... -
The spectroscopic (FT-IR and FT-Raman) and theoretical studies of 5-bromo-salicylic acid
(ELSEVIER SCIENCE BV, 2009)The experimental and theoretical study on the structures and vibrations of 5-bromo-salicylic acid (5-BrSA, C7H5BrO3) are presented. The Fourier transform infrared spectra (4000-400 cm(-1)) and the Fourier transform Raman ... -
DFT simulations and vibrational spectra of 4-chloro and 4-bromophenylboronic acid molecules
(WILEY-BLACKWELL, 2009)The experimental and theoretical vibrational spectra of 4-chloro- and 4-bromophenylboronic acids (abbreviated as 4Clpba and 4Brpba) were studied. The Fourier transform Raman and Fourier transform infrared (FTIR) spectra ...
