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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Theoretical study on structures and stability of Si2CP isomers
Guang-hui Chen1, Yi-hong Ding, Xu-ri Huang
1State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China.
The Journal of Physical Chemistry. A
|July 13, 2006
Summary
The silicon dicarbide phosphide (Si2CP) radical prefers a four-membered ring structure, unlike related radicals. This study explores its isomers, bonding, and potential interstellar or industrial applications.
Area of Science:
- Computational Chemistry
- Theoretical Chemistry
- Materials Science
Background:
- Previous studies on SiC2N and SiC2P radicals revealed linear ground states.
- Understanding the structural and energetic landscape of silicon-carbide-phosphorus species is crucial for predicting their behavior.
Purpose of the Study:
- To theoretically investigate the structures, energetics, spectroscopies, and isomerization pathways of doublet Si2CP species.
- To identify the ground-state isomer and explore the stability and characteristics of other potential isomers.
Main Methods:
- High-level theoretical calculations, including Coupled Cluster with Singles and Doubles (CCSD(T)) and Becke, 3-311G(d)+ZPVE (B3LYP) methods.
- Analysis of bonding nature, kinetic stability, and potential formation strategies for various Si2CP isomers.
Main Results:
- The ground-state isomer of Si2CP is a four-membered ring (cSiSiPC 1) with Si-C cross-bonding.
- Other isomers, including cyclic species with carbene character and a linear cumulenic form, exhibit varying degrees of kinetic stability.
- All five explored isomers are predicted to be observable in low-temperature environments.
Conclusions:
- The Si2CP radical exhibits unique structural preferences compared to its nitrogen and phosphorus analogs.
- The findings have implications for understanding interstellar chemistry and processes in phosphorus-doped silicon carbide vaporization.
- Further theoretical and experimental studies are warranted to fully characterize these silicon-carbide-phosphorus species.
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