| Project/Area Number |
09239104
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
TAMAO Kohei Institute for Chemical Research, KYOTO UNIVERSITY, Professor, 化学研究所, 教授 (60026218)
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| Co-Investigator(Kenkyū-buntansha) |
OZAMA Humiyuki Osaka City University, Faculty of Engineering, Professor, 工学部, 教授 (40134837)
HIYAMA Tamejiro Graduate School of Engineering, KYOTO UNIVERSITY, Professor, 大学院・工学研究科, 教授 (90026295)
YOSHIFUJI Masaaki Tohoku University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (90011676)
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| Project Period (FY) |
1997 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥174,900,000 (Direct Cost: ¥174,900,000)
Fiscal Year 2000: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1999: ¥11,900,000 (Direct Cost: ¥11,900,000)
Fiscal Year 1998: ¥80,000,000 (Direct Cost: ¥80,000,000)
Fiscal Year 1997: ¥80,000,000 (Direct Cost: ¥80,000,000)
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| Keywords | Inter-element linkage / Inter-element saturated linkages / Inter-element unsaturated linkages / Main group element chemistry / Transition metal catalysis |
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| Research Abstract |
The research project entitled "The Chemistry of Inter-element Linkage" has been performed during three academic years 1997-1999. The project has been focused on the Main Group Elements, i.e., the first systematic and generalized research project on the chemistry of the "Inter-element Linkage", which has been introduced as a new general term for chemical bonds such as mutual linkages within the heavy main group elements and linkages between the main group elements and the transition metals. The following four topics have been investigated : "Inter-element saturated linkages" (group leader : Kohei Tamao), "inter-element unsaturated linkages" (group leader : Masaaki Yoshifuji), "Linkages between main group elements and transition metals" (group leader : Fumiyuki Ozawa), and "Development of new functions of the inter-element linkages" (group leader : Tamejiro Hiyama).
The main achievements are as follows.
(1) Clear-cut experimental results have been obtained to clarify the origin of the sigma conjugation of the interelement saturated linkage based on the photophysical properties of some model compounds containing Si-Si bonds.
(2) In addition to the "steric protection", the "aromatic stabilization" has been found to be useful for stabilization of some interelement unsaturated linkages.
(3) The properties and reactivities of the interelement linkage between Pt and heavier group 14 elements have been studied in detail.
(4) Several new methods have been developed for chemical activation of interelement linkages, which include radical reactions and carbenoid species as well as the transition metal catalysis.
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