Chemistry of σ Electron Systems Based on Inverted σ-bonded Compounds
Project/Area Number |
20685004
|
Research Category |
Grant-in-Aid for Young Scientists (A)
|
Allocation Type | Single-year Grants |
Research Field |
Organic chemistry
|
Research Institution | Tohoku University |
Principal Investigator |
IWAMOTO Takeaki 東北大学, 大学院・理学研究科, 教授 (70302081)
|
Project Period (FY) |
2008 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥25,350,000 (Direct Cost: ¥19,500,000、Indirect Cost: ¥5,850,000)
Fiscal Year 2011: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2008: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
|
Keywords | 反転σ結合 / ケイ素 / ビシクロ[1.1.1]ペンタシラン / かご型化合物 / X 線結晶構 造解析 / X線結晶構造解析 / スタファン / σ共役 / 多環式シラン / ペルシラスタファン / σ-π共役 / σ電子系 / 高周期14族元素 / 合成 / 物性 / 溶媒分離イオン対 / カルボメタレーション / シリルアニオン |
Research Abstract |
We focused on "inverted σ bonds" that show unusual geometry and electronic properties and we synthesize several heavier group-14 element compounds bearing the inverted σ bonded compounds as their components. We have successfully prepared a series of functionalized bicyclo[1.1.1]pentasilanes that are one of the smallest molecular silicon cluster. Using the bicyclopentasilane units we successfully synthesized a series of persila[n]staffanes and revealed remarkable conjugation between the silicon cages. We also synthesized a dimer of 1,3-disila- bicyclo[1.1.0]butane which has an inverted Si-Si σ bond between the bridgehead silicon atoms. UV-vis spectrum and DFT calculations of the dimer show that significant interactions exist between the bridgehead Si-Si bond in the disilabicyclobutane units.
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Report
(6 results)
Research Products
(18 results)