Quantum-Chemical Calculation of Some Molecules of Triftoromethylstyroles by the DFT Method

2019 ◽  
pp. 5-6
Author(s):  
Alexandr Rakhimov ◽  
Keyword(s):  
Quantum Chemical Calculation ◽  
Quantum Chemical ◽  
Dft Method ◽  
Chemical Calculation

scholarly journals THE ORETICAL ESTIMATION OF THE ENERGY OF THE FORBIDDEN ZONE OF GRAPHENE ISOMERS FROM 7 HEXAGONS

2021 ◽  
pp. 15-21
Author(s):  
V. A. Babkin ◽  
D. S. Andreev ◽  
A. V. Ignatov ◽  
D. A. Klinov ◽  
E. S. Titova ◽  
...  
Keyword(s):  
Quantum Chemical Calculation ◽  
Quantum Chemical ◽  
Dft Method ◽  
Chemical Calculation

The DFT method was used to perform a quantum-chemical calculation of graphene isomers from 7 hexagons. The energy of the forbidden zone of these models is estimated theoretically. It is shown that the energy of the forbidden band depends very significantly on the structure of the configuration of the isomers of the studied graphene.

scholarly journals CALCULATION OF THE ELECTRONIC STRUCTURE OF SOME EPOXY MOLECULES BY THE DFT METHOD

2021 ◽  
pp. 32-34
Author(s):  
V. A. Babkin ◽  
D. S. Andreev ◽  
E. S. Titova ◽  
A. V. Ignatov ◽  
R. O. Boldyrev ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Electronic Structure ◽  
Quantum Chemical Calculation ◽  
Quantum Chemical ◽  
Density Functional ◽  
Dft Method ◽  
Chemical Calculation ◽  
Functional Theory ◽  
The Density Functional Theory

In this work, we performed a quantum-chemical calculation of some epoxy molecules: 1,2-epoxy-butene, 1,2-epoxy-2-methylpropane, 1,2 epoxyethane by the density functional theory DFT. An optimized geometric and electronic structure of these compounds is obtained. It was found that the studied epoxides belong to the class of very weak СH-acids (pKa = 28-30).

scholarly journals CALCULATION OF THE ELECTRONIC STRUCTURE OF SOME ORGANIC OXIDES BY THE DFT METHOD

2020 ◽  
pp. 32-34
Author(s):  
V. A. Babkin ◽  
D. S. Andreev ◽  
A. V. Ignatov ◽  
R. O. Boldyrev ◽  
D. A. Borisov ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Quantum Chemical Calculation ◽  
Quantum Chemical ◽  
Density Functional ◽  
Dft Method ◽  
Chemical Calculation ◽  
Ch Acids ◽  
Method Of Density Functional

In this work, we performed a quantum chemical calculation of cyclohexeneoxide and cyclopentenoxide using the method of density functional DFT. An optimized geometric and electronic structure of these compounds is obtained. It was established that the studied oxides belong to the class of very weak CH-acids (pKa = 28-30).

Novel oxidation state — zinc(III) in chelate with 3,7,11,15-tetraazaporphine and one fluorine ligand: Quantum-chemical modeling

2019 ◽  
Vol 23 (06) ◽  
pp. 685-689 ◽  
Author(s):  
Oleg V. Mikhailov ◽  
Denis V. Chachkov
Keyword(s):  
Oxidation State ◽  
Quantum Chemical Calculation ◽  
Ground State ◽  
Quantum Chemical ◽  
Structural Parameters ◽  
Dft Method ◽  
Fluoride Ion ◽  
Chemical Calculation ◽  
Chemical Modeling ◽  
The Given

Based on the results of a quantum chemical calculation using the DFT method, the possibility of the existence of a zinc heteroligand complex with 3,7,11,15-tetraazaporphine and fluoride ion with an oxidation state of Zn(III), unusual for the given element, is shown. Data on the structural parameters and multiplicity of the ground state of this complex are also presented.

scholarly journals CALCULATION OF THE ELECTRONIC STRUCTURE OF CATIONIC POLYMERIZATION MONOMERS BRANCHED IN THE β-POSITION TO THE DOUBLE BOND BY THE DFT METHOD

2020 ◽  
pp. 35-38
Author(s):  
V. A. Babkin ◽  
D. S. Andreev ◽  
A. V. Ignatov ◽  
D. A. Borisov ◽  
R. O. Boldyrev ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Double Bond ◽  
Quantum Chemical Calculation ◽  
Cationic Polymerization ◽  
Quantum Chemical ◽  
Density Functional ◽  
Dft Method ◽  
Chemical Calculation ◽  
Ch Acids

In this paper, a quantum chemical calculation of some monomers: 4-methylpentene-1, 4-methylhexene-1, 4,4-dimethylpentene-1 by the density functional DFT method is performed. The optimized geometric and electronic structure of these compounds is obtained. It was found that the studied monomers belong to the class of very weak CH acids (pKa = 28).

Examination on Permittivity Estimation of Hydrocarbon-based Thermosetting Resin based on Quantum Chemical Calculation

2017 ◽  
Vol 137 (11) ◽  
pp. 626-631 ◽  
Author(s):  
Yuki Fuchi ◽  
Ryota Nakasako ◽  
Masahiro Kozako ◽  
Masayuki Hikita ◽  
Nobuhito Kamei
Keyword(s):  
Quantum Chemical Calculation ◽  
Quantum Chemical ◽  
Chemical Calculation ◽  
Thermosetting Resin

Effect of temperature on chiroptical and conformational properties of acyclic ketoses

1980 ◽  
Vol 45 (2) ◽  
pp. 475-481
Author(s):  
Slavomír Bystrický ◽  
Tibor Sticzay ◽  
Igor Tvaroška
Keyword(s):  
Quantum Chemical Calculation ◽  
Quantum Chemical ◽  
Conformational Mobility ◽  
Effect Of Temperature ◽  
Chemical Calculation ◽  
Cd Spectra ◽  
Conformational Properties ◽  
Temperature Dependences

Conformational mobility of tetruloses, 2-pentuloses, D-3-pentulose and 4-deoxy-L-pentulose was studied by measuring temperature dependences of CD spectra in the region +40°C to -140°C in a methanol-ethanol (1:4) mixture. The changes in spectra reflect the population of rotamers around bonds to the carbonyl chromophore. The most stable conformers were determined by PCILO quantum chemical calculation.

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