| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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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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