Natural Bond Orbital (NBO)
Physio-chemical Investigation and Natural Bond Orbital Analysis of the Most Actives Ingredient of Fennel Plant
... In this study, physio-chemical properties of effective compounds of fennel plant were investigated through using computational chemistry. To do this, trans-anethole, estragole, 3'- hydroxyanethole and 4- methoxycinnamyl ...
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Natural Bond Orbital Analysis of the Bonding in Complexes of Li with Ammonia
... Natural Bond Orbital (NBO) analysis: The natural charge, spin density and isotropic Fermi contact density calculated at each atomic center are given in ...
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FRONTIER MOLECULAR, NATURAL BOND ORBITAL, UV VIS SPECTRAL STUDY, SOLVENT INFLUENCE ON GEOMETRIC PARAMETERS, VIBRATIONAL FREQUENCIES AND SOLVATION ENERGIES OF 8 HYDROXYQUINOLINE
... the natural bond orbital, FMOs, UV-VIS, thermodynamic properties and medium influence on solvation energies, dipole moment, FT- IR and FT-Raman using polarizable continuum model (PCM) and ...
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Density functional theory, natural bond orbital and atoms in molecule analyses on the hydrogen bonding interactions in 2-chloroaniline – Carboxylic acid complexes
... hydrogen bond between 2-chloroaniline – carboxylic acid complexes has been explored by calculation of stabilization energy (E(2)) between proton acceptor and proton donor under NBO ...hydrogen bond length, ...
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Sulfate Sulfuric Acid (SUSA)/NaNO2: Efficient Procedure for N-Nitrosation of Secondary Amines and DFT Studies of the Products
... using natural bond orbital (NBO) analysis at the same level in order to understand various second-order interactions between the filled orbitals of one subsystem and vacant orbitals of another ...
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← Return to Article Details SOLVENT INFLUENCE ON THE STABILITY AND PROPERTIES OF Si4H4 ISOMERS BY COMPUTATIONAL METHODS
... The standard Def2-TZVPP basis set [37] was utilized in the calculations. Geometry optimization was performed utilizing with the hybrid functional of Truhlar and Zhao (M06-2X) [38]. A vibrational analysis was carried out ...
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Structural and spectroscopic characterization of 4 methylumbelliferone: a combined experimental and computational study
... Natural Bond Orbital analysis provides an efficient method for studying intra- and intermolecular bonding and interaction among bonds, and also provides a convenient basis for investigating charge ...
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The spectroscopic (FTIR, FT-Raman, and NMR) analysis, first- order hyperpolarizability, magnetic susceptibility and HOMO– LUMO analysis of 3-(4-Methylphenyl)-2-phenyl-5-(thiophene- 2-ylmethylidene)-2, 5-dihydro-1,2,4-triazin-6(1 H)-one
... by natural bond orbital (NBO) analysis using DFT method to give clear evidence of stabilization originating from various molecular ...sigma bond) interaction of σ(C 1 -C 2 ) ...
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NBO, nonlinear optical and thermodynamic properties of 10-Acetyl-10H-phenothiazine 5-oxide
... paper, natural bond orbital (NBO) analysis, nonlinear optical and the thermodynamic properties of 10-Acetyl-10H-phenothiazine 5-oxide have been analyzed by employing density functional theory level ...
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Quantum Computational, Experimental Vibrational Spectroscopic and Molecular Docking Investigation of 4-Oxo-4H-Chromone-3-Carboxaldehyde
... molecular orbital theory of a molecular system, the interaction between the filled molecular orbital and unfilled (vacant) orbital can be expressed in terms of electron delocalization 31 ...donor ...
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Synthesis, crystal structure, DFT studies and biological activity of (Z)-3-(3-bromophenyl)-1-(1,5-dimethyl-1H-pyrazol-3-yl)-3-hydroxyprop-2-en-1-one
... A novel pyrazole-β-ketoenol compound has been syn- thesized, it has been characterized by NMR and IR techniques and its XRD single crystal structure was determined. Density functional calculations are used to evaluate ...
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Crystal growth, experimental, and theoretical investigation of organic nlo material n, n dimethyl-4 nitro aniline
... The natural bond orbital (NBO) analysis gives a detailed explanation of the structure of a conformer by a set of localized bond, antibonds and Rydberg extra valence ...the bond ...
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Vibrational Spectroscopic Investigation, Homo-Lumo, Nlo, and NBO Analyses ofAlpha, Alpha- Dibromo – M- Chloro Toluene
... complete vibrational assignment and analysis of the fundamental modes of the compound have been carried out and subsequently confirmed by total energy distribution (TEDs). In the calculations performed to determine the ...
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Flexural bond strength of natural hydraulic lime mortar and clay brick
... greatest bond strength; a trend which is not maintained in the ...the bond capacity ...mortars, bond strength increases linearly with the initial flow, with the highest flow exhibiting the greatest ...
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Identifying and tracing potential energy surfaces of electronic excitations with specific character via their transition origins : application to oxirane
... local optimisable functions, called nonorthogonal generalised Wannier functions (NGWFs), are optimised in situ to best repre- sent the density matrix of the system. Recently, linear-response TDDFT Tamm–Dancoff ...
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On the six components of optical angular momentum
... and orbital parts becomes more problematic [12, 13, ...and orbital parts is possible beyond the paraxial regime but that neither part alone is itself an angular momentum [15, ...and orbital parts as ...
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Unexpected magnetic properties of gas-stabilized platinum nanostructures in the tunneling regime
... Figure 4. DFT-GGA simulations. a. Molecular energy of a Pt-O wire (color scale in eV). The ground state is obtained for a Pt-Pt distance d of 260 pm (compared to 243 pm without oxygen). The oxygen atom is at h = 150 pm ...
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One Electron Addition to Pentavalent Phosphorus with the Phosphorus Chlorine Bond as Acceptor Introducing a Fundamental Distinction in Substitution Mechanism between SN2(P) and SN2(C)
... It is suggested that the stereo-inversion occurs in a synchronous reorientation of the P-O bond. This conversion is favored by relieve of steric strain in the crystal by relocation of the P-O bond to the ...
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Conformational preferences of α fluoroketones may influence their reactivity
... roughly aligned with the π-system of the carbonyl group and ar- omatic ring (Figure 7). It may well be that in this conformation there is significant repulsion between the halogen lone pairs and the filled C=O ...
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Orbital Adnexal Lymphoma Diagnostic Misalignment
... inflammatory orbital disease, preseptal and orbital cellulitis, orbital idiopathic inflammatory disease-pseudotumors, especially dacryoadenitis and myositis and thyroid associate orbit disease makes ...
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