Spectroscopic and quantum chemical studies of molecular geometry, frontier molecular orbital, NLO, NBO analysis of 7-chloro-1 methyl-5-phenyl-1,5-dihydro-benzo[1,4]diazepine-2,4-dione

Optik ◽  
2016 ◽  
Vol 127 (12) ◽  
pp. 5055-5064 ◽  
Author(s):  
B. Sylaja ◽  
S. Gunasekaran ◽  
S. Srinivasan
Keyword(s):  
Molecular Orbital ◽  
Quantum Chemical ◽  
Molecular Geometry ◽  
Nbo Analysis ◽  
Frontier Molecular Orbital ◽  
Chemical Studies ◽  
Quantum Chemical Studies

scholarly journals Inhibition Effect of Atenolol on Copper Corrosion in 1M HNO3: Experimental Study and DFT

2021 ◽  
pp. 1-13
Author(s):  
Ehouman Ahissan Donatien ◽  
Bamba Kafoumba ◽  
Kogbi Guy Roland ◽  
Bamba Amara ◽  
Kouakou Adjoumani Rodrigue ◽  
...  
Keyword(s):  
Molecular Orbital ◽  
Quantum Chemical ◽  
Density Functional ◽  
Energy Gap ◽  
Copper Surface ◽  
Thermodynamic Quantities ◽  
Copper Corrosion ◽  
Chemical Studies ◽  
Quantum Chemical Studies ◽  
Lowest Unoccupied Molecular Orbital

Atenolol was examined as a copper corrosion inhibitor in 1M nitric acid solution using the mass loss technique and quantum chemical studies, based on density functional theory (DFT) at the B3LYP level with the base 6-311G (d,p). The inhibitory efficiency of the molecule increases with increasing concentration and temperature. The adsorption of the molecule on the copper surface follows the modified Langmuir model. The thermodynamic quantities of adsorption and activation were determined and discussed. The calculated quantum chemical parameters related to the inhibition efficiency are the energy of the highest occupied molecular orbital E(HOMO), the energy of the lowest unoccupied molecular orbital E(LUMO), the HOMO-LUMO energy gap, the hardness (η), softness (S), dipole moment (μ), electron affinity (A), ionization energy (I), absolute electronegativity (χ),absolute electronegativity (χ), fraction (ΔN) of electrons transferred from Atenolol to copper and electrophilicity index(ω). The local reactivity was analyzed through the condensed Fukui function and condensed softness indices to determine the nucleophilic and electrophilic attack sites. There is good agreement between the experimental and theoretical results.

scholarly journals Quantum Chemical Studies on the Inhibiting Effect of Bipyrazoles on Steel Corrosion in HCl

2010 ◽  
Vol 7 (2) ◽  
pp. 419-424 ◽  
Author(s):  
K. Laarej ◽  
M. Bouachrine ◽  
S. Radi ◽  
S. Kertit ◽  
B. Hammouti
Keyword(s):  
Molecular Orbital ◽  
Quantum Chemical ◽  
Density Functional ◽  
Steel Corrosion ◽  
Chemical Parameters ◽  
Quantum Chemical Parameters ◽  
Highest Occupied Molecular Orbital ◽  
Chemical Studies ◽  
Quantum Chemical Studies ◽  
Lowest Unoccupied Molecular Orbital

Correlation of the efficacy of some bipyrazoles,N,N-bis(3,5-dimethyl-pyrazol-1-ylmethyl)-cyclohexylamine (Bip 1),N,N-bis(3,5-dimethylpyrazol-1-ylmethyl)-ethanolamine (Bip 2),N,N-bis(3,5-dimethylpyrazol-1-ylmethyl) allylamine (Bip 3) andN,N-bis(3-carboethoxy-5-methylpyrazol-1-ylmethyl)-cyclohexylamine (Bip 4), against the corrosion of mild steel in HCl is discussed using density functional approach B3LYP/6-31G(d) calculations. The bipyrazole inhibitors exhibited the highest inhibition efficiency. The quantum chemical parameters calculated are, the highest occupied molecular orbital (HOMO), the lowest unoccupied molecular orbital (LUMO), the gap energy (ΔE), the dipole moment (μ), the softness (σ) and the total energy (TE).

Quantum Chemical Studies of Hole Transfer in Liquid Hexane

2017 ◽  
Vol 137 (7) ◽  
pp. 435-441
Author(s):  
Masahiro Sato ◽  
Akiko Kumada ◽  
Kunihiko Hidaka ◽  
Toshiyuki Hirano ◽  
Fumitoshi Sato
Keyword(s):  
Quantum Chemical ◽  
Hole Transfer ◽  
Chemical Studies ◽  
Quantum Chemical Studies
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