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<p>DFT studies of intramolecular double proton transfer of 3,6-dihydro-3,6-diimino(siliane or pyridine)-2,5-diamine</p>

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Title Statement <p>DFT studies of intramolecular double proton transfer of 3,6-dihydro-3,6-diimino(siliane or pyridine)-2,5-diamine</p>
 
Added Entry - Uncontrolled Name Tahermansouri, Hasan ; Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
Farhan, Lida ; Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran.
 
Uncontrolled Index Term theoretical & quantum chemistry
Theoretical chemistry, Density functional calculations, Proton transfer, Intramolecular proton transfer, Double proton transfer, Aromaticity
 
Summary, etc. <p style="text-align: justify;">Intramolecular double proton transfer of 3,6-dihydro-3,6-diiminosiline-2,5-diamine (A) and 3,6-dihydro-3,6-diiminopyridine-2,5-diamine (B) at DFT (B3LYP) level of theory has been investigated. Two mechanisms, stepwise (TS<sub>1</sub>) and concerted (TS<sub>2</sub>), are proposed for the process of proton transfer. The stepwise mechanism itself includes two pathways, the pathway (1) and pathway (2), which involve the resonance forms from side of N-C-C-C-N and N-C-X-C-N atoms (X = Si-H or N), respectively. These results show that for both the compounds the process of proton transfer is through the stepwise mechanism. The results indicate that in the case of compound (A) the process is through pathway (1), while for compound (B) the pathways (1) and (2) were almost similar to each other. In addition, aromaticity of the two compounds has been evaluated based on the nucleus independent chemical shift values to predict dominant resonance structures and the charge distributions in the ring.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-12-22 15:36:57
 
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http://op.niscair.res.in/index.php/IJCA/article/view/11491
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 55, ##issue.no## 5 (2016): INDIAN JOURNAL OF CHEMISTRY - SECTION A
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/11491/32509
http://op.niscair.res.in/index.php/IJCA/article/download/11491/32510
http://op.niscair.res.in/index.php/IJCA/article/download/11491/33023
http://op.niscair.res.in/index.php/IJCA/article/download/11491/33024
 
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