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2020 Fiscal Year Final Research Report

Synthesis, Structures, and Properties of Organosilicon Curved sigma-Conjugated Compounds

Research Project

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Project/Area Number 18H01960
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 33010:Structural organic chemistry and physical organic chemistry-related
Research InstitutionGunma University

Principal Investigator

KYUSHIN Soichiro  群馬大学, 大学院理工学府, 教授 (40195392)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywords有機ケイ素化合物 / 曲面σ共役 / かご形オリゴシラン / おわん形オリゴシラン
Outline of Final Research Achievements

The following results were obtained in this research.
1) The charge-transfer complexes of oligosilane dendrimers and an electron acceptor were formed, and their UV/Vis spectra were measured. In order to raise the formation constant, synthesis of bicyclo[4.4.4]tetradecasilane having a large cavity was carried out.
2) Oligosilanes containing a phosphorus atom were synthesized. To clarify how the phosphorus atom affects the σ conjugation systems, their electronic properties were studied by UV spectra and theoretical calculations.

Free Research Field

有機ケイ素化学

Academic Significance and Societal Importance of the Research Achievements

π共役はp軌道同士が平面上で相互作用することによって発現する現象で、有機化学における基本概念の一つである。最近のかご形化合物やおわん形化合物の研究によって、π共役が平面上だけではなく、曲面上でも発現することが明らかになっている。ところでケイ素化合物ではケイ素-ケイ素結合が相互作用するσ共役が知られているが、曲面上でσ共役化合物がどのような性質を示すかについてはほとんど明らかにされていない。本研究では有機ケイ素曲面σ共役化合物や関連化合物を合成して、その性質を明らかにした。

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Published: 2022-01-27  

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