World-Record Molecules : The longest C-C bond and hypervalency
| Project/Area Number |
21350022
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Organic chemistry
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
SUZUKI Takanori 北海道大学, 大学院・理学研究院, 教授 (70202132)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
FUJIWARA Kenshu 北海道大学, 大学院・理学研究院, 准教授 (20222268)
KAWAI Hidetoshi 北海道大学, 大学院・理学研究院, 助教 (50322798)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥20,150,000 (Direct Cost: ¥15,500,000、Indirect Cost: ¥4,650,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2009: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
|
|---|
| Keywords | 構造有機化学 / 物理有機化学 / 共有結合 / 長い結合 / X線構造 / ジラジカル / 超原子価 |
|---|
| Research Abstract |
Based on our own results for hexaphenylethane derivative studied so far, it has been proposed that the compound with a ultralong C-C bond would be generated as a stable entity when the two unpaired electron are forced to stay in a proximity in the corresponding diradical without isomerization into the closed-shell species through resonance/peri-cyclic reactions. Based on the above concept have been designed a series of tetraarylpyracenes where the longest C-C bond ever [1.791(3)Å] was determined experimentally. The expandability of such prestrained bonds was also uncovered.
|
Report
(4 results)
Research Products
(40 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Journal Article] Multi-input-Multi-output Molecular Response System Based on Dynamic Redox Behavior of 3,3,4,4-Tetraaryldihydro[5]helicene Derivatives : Reversible Formation/Destruction of Chiral Fluorophore and Modulation of Chiroptical Properties by Solvent Polarity2009
Author(s)
T. Suzuki, Y. Ishigaki, T. Iwai, H. Kawai, K. Fujiwara, H. Ikeda, Y. Kano, K. Mizuno
-
Journal Title
Chem. Eur. J.
Volume: 15
Pages: 9434-9441
Related Report
Peer Reviewed
-
-
[Journal Article] Negligible diradical character for the ultralong C-C bond in 1,1,2,2-tetraarylpyracene derivatives at room temperature2009
Author(s)
T. Takeda, H. Kawai, R. Herges, E. Mucke, Y. Sawai, K. Murakoshi, K. Fujiwara, T. Suzuki
-
Journal Title
Tetrahedron Lett (50th anniversary special issue)
Volume: 50
Pages: 3693-3697
Related Report
Peer Reviewed
-
-
-
[Journal Article] Negligible diradical character for the ultralong C-C bond in 1, 1, 2, 2-tetraarylpyracene derivatives at room temperature2009
Author(s)
T.Takeda, H.Kawai, R.Herges, E.Mucke, Y.Sawai, K.Murakoshi, K.Fujiwara, T.Suzuki
-
Journal Title
Tetrahedron Lett. (50th anniversary special issue)
Volume: 50
Pages: 3693-3697
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
