scholarly journals Steric vs Electronic Effects: A New Look into Stability of Diastereomers, Conformers and Constitutional Isomers

Author(s):  
Sopanant Datta ◽  
Taweetham Limpanuparb

A quantum chemical investigation of the stability of compounds with identical formulas was carried out on 23 classes of halogenated compounds made of H, F, Cl, Br, I, C, N, P, O and S atoms. All possible structures were generated by combinatorial approach and studied by statistical methods. The prevalence of formula in which its <i>Z</i> configuration, <i>gauche</i> conformation and meta isomer are the most stable forms is calculated and discussed. Quantitative and qualitative models to explain the stability of the 23 classes of halogenated compounds were also proposed.<br>

2021 ◽  
Author(s):  
Sopanant Datta ◽  
Taweetham Limpanuparb

A quantum chemical investigation of the stability of compounds with identical formulas was carried out on 23 classes of compounds made of C, N, P, O, S atoms as core structures and halogens H, F, Cl, Br, I as substituents. All possible structures were generated and investigated by quantum mechanical methods. The prevalence of formula in which its <i>Z</i> configuration, <i>gauche</i> conformation and meta isomer are the most stable forms is calculated and discussed. Quantitative and qualitative models to explain the stability of the 23 classes of halogenated compounds were also proposed.<br>


2021 ◽  
Author(s):  
Sopanant Datta ◽  
Taweetham Limpanuparb

A quantum chemical investigation of the stability of compounds with identical formulas was carried out on 23 classes of compounds made of C, N, P, O, S atoms as core structures and halogens H, F, Cl, Br, I as substituents. All possible structures were generated and investigated by quantum mechanical methods. The prevalence of formula in which its <i>Z</i> configuration, <i>gauche</i> conformation and meta isomer are the most stable forms is calculated and discussed. Quantitative and qualitative models to explain the stability of the 23 classes of halogenated compounds were also proposed.<br>


2021 ◽  
Author(s):  
Sopanant Datta ◽  
Taweetham Limpanuparb

<div>A quantum chemical investigation of the stability of compounds with identical formulas was carried out on 23 classes of halogenated compounds made of H, F, Cl, Br, I, C, N, P, O and S atoms. The prevalence of formula in which its Z configuration, gauche conformation and meta isomer are the most stable forms is calculated and discussed. The prevalence data shows that in compounds made of carbon backbones, the electronic effect is weaker than the steric effect. The electronic factor is more important as the backbone atoms are replaced with atoms on the right and upper part of the periodic table.</div>


2021 ◽  
Author(s):  
Sopanant Datta ◽  
Taweetham Limpanuparb

<div>A quantum chemical investigation of the stability of compounds with identical formulas was carried out on 23 classes of halogenated compounds made of H, F, Cl, Br, I, C, N, P, O and S atoms. The prevalence of formula in which its Z configuration, gauche conformation and meta isomer are the most stable forms is calculated and discussed. The prevalence data shows that in compounds made of carbon backbones, the electronic effect is weaker than the steric effect. The electronic factor is more important as the backbone atoms are replaced with atoms on the right and upper part of the periodic table.</div>


2021 ◽  
Author(s):  
Sopanant Datta ◽  
Taweetham Limpanuparb

<div> <p>A quantum chemical investigation of the stability of compounds with identical formulas was carried out on 23 classes of compounds made of C, N, P, O, S atoms as core structures and halogens H, F, Cl, Br, I as substituents. All possible structures were generated and investigated by quantum mechanical methods. The prevalence of a formula in which its <i>Z</i> configuration, <i>gauche</i> conformation or <i>meta</i> isomer is the most stable form is calculated and discussed. Quantitative and qualitative models to explain the stability of 23 classes of halogenated compounds were also proposed.</p></div>


RSC Advances ◽  
2014 ◽  
Vol 4 (75) ◽  
pp. 39725-39731 ◽  
Author(s):  
Sergey I. Lopatin ◽  
Andrej I. Panin ◽  
Sergey M. Shugurov ◽  
Ksenia A. Emelyanova

The stability of gaseous GeMo2O7 and GeB2O4 were confirmed by Knudsen effusion mass spectrometry. To get structure parameters of these gaseous salts quantum chemical investigation of molecules was undertaken.


2014 ◽  
Vol 43 (36) ◽  
pp. 13571-13577 ◽  
Author(s):  
László Könczöl ◽  
Gábor Turczel ◽  
Tamás Szpisjak ◽  
Dénes Szieberth

A comprehensive quantum chemical study reveals the electronic structure and stability of novel η2-H2BR3complexes. The electronic effects of substituents are investigated using NBO analysis and MO theory. A new type of natural pentavalent borane compound is also presented.


2015 ◽  
Vol 44 (21) ◽  
pp. 10014-10021 ◽  
Author(s):  
S. M. Shugurov ◽  
A. I. Panin ◽  
S. I. Lopatin ◽  
K. A. Emelyanova

The stability of gaseous GeV2O6and SnV2O6were confirmed by Knudsen effusion mass spectrometry. To obtain the structural parameters of these gaseous salts, a quantum chemical investigation of its molecular properties was undertaken.


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