| Project/Area Number |
15350037
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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 |
Inorganic chemistry
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| Research Institution | National Institute of Advanced Industrial Science and Technology (AIST) |
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Principal Investigator |
SHIMADA Shigeru AIST, Research Institute for Innovation in Sustainable Chemistry, Senior Research Scientist, 環境化学技術研究部門, 主任研究員 (40357207)
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| Co-Investigator(Kenkyū-buntansha) |
HAYASHI Teruyuki AIST, Research Institute for Innovation in Sustainable Chemistry, Group Leader, 環境化学技術研究部門, グループ長 (00357807)
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| Project Period (FY) |
2003 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥14,800,000 (Direct Cost: ¥14,800,000)
Fiscal Year 2005: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2004: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 2003: ¥6,700,000 (Direct Cost: ¥6,700,000)
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| Keywords | Silicon / Platinum / Palladium / Nickel / Transition-metal complexes / Hydrosilanes / X線構造解析 / ホスフィン配位子 / ニッケル錯体 / 白金錯体 / パラジウム錯体 |
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| Research Abstract |
The reaction of bidentate and tridentate silyl ligand precursor hydrosilanes with group 10 transition-metal complexes was studied for the advancement of basic chemistry of silicon-transition-metal complexes and for the development of efficient catalysts for Si-Si bond forming reactions. The results showed that the chemistry of silicon-group 10 transition-metal complexes has a diversity beyond our expectation. Also we obtained important information for the development of catalysts for Si-Si bond forming reaction. The major results of this research are listed below.
It was clarified that the reaction of the tridentate hydrosilane, (2-SiH_3C_6H_4)_2SiH_2,with group 10 transition-metal complexes provided diverse range of products depended on the metals and the steric hindrance of the ligands. We for the first time succeeded in the isolation and structure determination of a silylnickel complex that has a Ni^<IV>(H)(Si)_3 structure in the solid state while η^2-(Si-H)Ni structure in solution.
・We succeeded in the isolation and structure determination of trinuclear and tetranuclear Pd complexes having Pd centers ligated by five Si atoms. This is the first example of Pd complex with a Pd center ligated by five formally anionic ligands.
・The first example of Pt complex with cyclodisiloxane moiety was obtained by the reaction of the bidentate hydrosilane with a Pt(0) phosphine complex.
・It was clarified that the reaction of the bidentate and the tridentate hydrosilanes with group 10 transition metal phosphine complexes was highly affected by the steric hindrance of phosphine ligands and of the hydrosilanes. If the steric hindrance is small, multinuclear complexes and high formal oxidation state complexes are easily formed. On the other hand, if the steric hindrance is severe, Si-Si bond forming reaction often takes place. This finding provides important information for the development of efficient catalysts for a Si-Si bond forming reaction.
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