Quantum mechanical calculations of the properties of oligosilanes.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F02%3A55033023" target="_blank" >RIV/61389013:_____/02:55033023 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Quantum mechanical calculations of the properties of oligosilanes.
Original language description
Quantum mechanical study of polarons in oligo[methyl(phenyl)silanes] (OMPSi) was performed. The conformations of the defect-free OMPSi and OMPSi containing positive and negative polaron were optimized by measns of B3LYP method. For comparison and evaluation of the substituent effects, the conformation of the unsubstituted oligosilane was also calculated. The conformations were described by means of Si-Si bond lengths and Si-Si-Si bond angles. The negative polaron conformation shows a significant chain stretching. On the other hand, the positive polaron conformation is shrunk. The explanation is based on the changes of the electron densities. There is also a strong influence of the substituents on the conformation of the negative polaron. The middle Si-Si bond is much shorter for the substitute oligomer and the bond angles are smaller. On the other hand, the influence of the substituents on the conformation of the positive polaron is small.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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