Direct observation of the steric effect in chemical reactions by controlling the orientation at transition state
| Project/Area Number |
20350006
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Osaka University |
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Principal Investigator |
KASAI Toshio Osaka University, 名誉教授 (20152613)
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| Co-Investigator(Kenkyū-buntansha) |
CHE DockーChil 大阪大学, 大学院・理学研究科, 助教 (20273732)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2010: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2008: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
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| Keywords | 化学反応 / 立体ダイナミクス / 分子配向 / 反応遷移状態 / 配向OH分子ビーム / 反応分岐 / 衝突錯合体 / 準安定CO分子ビーム / アライメント選別 / 偏光レーザー / 配向分子線 / OHラジカル / 分子の電子密度 / 分子のアライメント状態選別 / 反応制御 / 立体効果の直接観測 / 単一量子状態 |
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| Research Abstract |
Direct observation of the steric effect in the OH + HBr chemical reaction was made by controlling the OH radical orientation in order to clarify mechanisms for stereo-anisotropy. We find that the HBr collision at the O-end of OH radical is more favorable than that at the H-end. The theoretical analysis suggested that there are at least two mechanisms play roles to give the observed steric effect. One is the H atom abstraction at the O-end of OH and another is the H atom migration at the H-end of OH. Alignment of CO(a) was performed using a linearly polarized laser at 206nm. This success will allow us to control molecular orientation at transition state in a novel way.
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Report
(4 results)
Research Products
(45 results)
