2015 Fiscal Year Final Research Report
Construction of High Dimensional Magnetic Network by Using Spiro-Conjugated Unpaired Electrons
| Project/Area Number |
25620066
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Keio University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | ラジカル / 構造機能相関 / 分子磁性 / 電子構造解析 / 軌道間相互作用 / 分光学的性質 |
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| Outline of Final Research Achievements |
To design open-shell molecules having a high dimensional magnetic network, synthesis and characterization of biacridine derivatives with hetero spiro atom and chemical modification of nitrogen centered stable organic radicals have been investigated. The physicochemical properties of spirobiacridine dinitroxide derivatives connected by Si or Ge spiro atom were studied. Their molecular and crystal structures were elucidated and their electronic states were evaluated by the spectroscopic methods. Their electronic structures and magnetic interaction were analyzed by the computational method and magnetic measurements. While ground triplet state was implied by the computational method, predominant antiferromagnetic interaction was observed due to the intermolecular close contact between spin centers. The chemical modification of nitrogen centered radicals such as verdazyl and triazynyl derivatives could be successfully conducted by the Suzuki-Miyaura cross-coupling reaction.
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| Free Research Field |
有機機能材料化学
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