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Isomerization energies and surface electrostatic potential analyses on nitriles and isocyanides
1School of Chemistry and Chemical Engineering, Taishan University, Tai'an, 271000, Shandong, China.
This study explores isocyanide-nitrile rearrangements using computational methods. It analyzes how various substituents affect isomerization energies and bonding characteristics, providing insights into chemical reactivity.
Area of Science:
- Computational Chemistry
- Organic Chemistry
Background:
- Isocyanide-nitrile rearrangement is a significant area of chemical research.
- Understanding substituent effects is crucial for predicting reactivity.
Purpose of the Study:
- To systematically investigate the isocyanide-nitrile rearrangement for a diverse set of substituents.
- To analyze the influence of substituents on isomerization energies and bonding.
Main Methods:
- Density Functional Theory (DFT) calculations using B3LYP-D3(BJ)/def2-QZVP level.
- Full geometry optimization of nitriles and isocyanides.
- Analysis of substituent effects using electrostatic potential (ESP) mapped onto van der Waals surfaces.
Main Results:
- Calculated isomerization energies for various R-C≡N to R-N=C structures.
- Detailed analysis of substituent effects on the electronic structure and bonding.
- Correlations between substituent properties and rearrangement energetics.
Conclusions:
- Substituents significantly influence the stability and rearrangement pathways of isocyanides and nitriles.
- ESP analysis provides valuable insights into the bonding character and reactivity.
- The study offers a comprehensive understanding of isocyanide-nitrile isomerization.
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