2023 Fiscal Year Final Research Report
PYRAMIDANES: NOVEL ORGANIC CLUSTERS
| Project/Area Number |
21K05017
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 33010:Structural organic chemistry and physical organic chemistry-related
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| Research Institution | University of Tsukuba |
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Principal Investigator |
LEE Vladimir 筑波大学, 数理物質系, 講師 (90375410)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | cluster / calculations / cyclobutadiene dianion / germanium / group 14 element / organolithium compounds / pyramidane / X-ray diffraction |
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| Outline of Final Research Achievements |
We comprehensively investigated reactivity of the novel Main Group element polyhedral clusters, pyramidanes, towards a range of nucleophilic reagents, first of all, organolithium reagents. In these reactions, pyramidanes revealed an unprecedented electrophilic behavior, which allowed for the smooth approach to a variety of organometallic derivatives featuring E-Li (E = Ge, Sn) bonding. The latter compounds can be readily functionalized with appropriate electrophiles, forming a series of synthetically useful metallole derivatives.
Based on this (and previous) research, we made general conclusions regarding the reaction pathways and mechanisms in the reaction of the cyclobutadiene dianion derivative with the Main Group element halides.
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| Free Research Field |
Main Group element chemistry
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| Academic Significance and Societal Importance of the Research Achievements |
The developed strategy allows for a synthetic approach towards organometallic compounds featuring E-Li bond (E = Ge, Sn), from which a variety of germole derivatives can be prepared. The latter compounds are important as prospective ligands for transition metal complexes for advanced materials.
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