World-Record Molecules : The longest C-C bond and hypervalency

世界纪录分子：最长的 C-C 键和超价键

• 批准号: 21350022
• 负责人: SUZUKI Takanori
• 金额: $ 12.9万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21350022/
• 关键词: 構造有機化学; 物理有機化学; 共有結合; 長い結合; X線構造; ジラジカル; 超原子価

Based on our own results for hexaphenylethane derivative studied so far, it has been proposed that the compound with a ultralong C-C bond would be generated as a stable entity when the two unpaired electron are forced to stay in a proximity in the corresponding diradical without isomerization into the closed-shell species through resonance/peri-cyclic reactions. Based on the above concept have been designed a series of tetraarylpyracenes where the longest C-C bond ever [1.791(3)Å] was determined experimentally. The expandability of such prestrained bonds was also uncovered.

基于我们对六苯乙烷衍生物的研究结果，提出了当两个未成对电子被迫在相应的双自由基中保持接近而不通过共振/围环反应异构化成闭壳层物种时，具有超长C-C键的化合物将作为稳定实体生成。基于上述概念，设计了一系列四芳基芘，其中最长的C-C键[1.791（3）π]是实验确定的。这种预应变债券的可扩展性也被发现。

项目成果

Intramolecular Methylacridane-acridinium Complexes : Isolation, Structure, and Reactivities of the C-H Bridged Carbocation

分子内甲基吖啶-吖啶配合物：C-H 桥碳阳离子的分离、结构和反应性

• 发表时间: 2009
• 作者: Masami Sakamoto;et al;T. Suzuki
• 通讯作者: T. Suzuki

Nonadditive substituent effects on expanding prestrained c-c bond in crystal: X-ray analyses on unsymmetrically substituted tetraarylpyracenes prepared by a flow microreactor method

非加成取代基对晶体中预应变 c-c 键扩展的影响：流动微反应器法制备的不对称取代四芳基吡苯的 X 射线分析

• DOI: 10.1246/cl.2012.541
• 发表时间: 2012
• 期刊: Chemistry Letters
• 影响因子: 1.6
• 作者: Yusuke Ishigaki;et a1.
• 通讯作者: et a1.

Induced Preference for Axial Chirality in a Triarylmethylium o, o-Dimerupon Complexation with Natural gamma-Cyclodextrin : Strong ECD Signaling and Fixation of Supramolecular Chirality to Molecular Chirality

三芳基甲基鎓 o, o-二聚体与天然 γ-环糊精络合中诱导的轴向手性偏好：强 ECD 信号传导以及超分子手性与分子手性的固定

• DOI: 10.1039/c2cc17475h
• 发表时间: 2011
• 期刊: Chemical Communications
• 影响因子: 4.9
• 作者: Takanori Suzuki;Hitomi Tamaoki;Kazuhisa Wada;Ryo Katoono;Tatsuo Nehira;Hidetoshi Kawai;Kenshu Fujiwara
• 通讯作者: Kenshu Fujiwara

Halochromic Chiroptical Response of Novel Bis(9-acridinyl)-type Fluorophores with a Helical pi-Framework

具有螺旋 pi 框架的新型双（9-吖啶基）型荧光团的卤色手性光学响应

• 发表时间: 2010
• 期刊: Chem. Lett
• 作者: T. Nehira;Y. Yoshimoto;K. Wada;H. Kawai;K. Fujiwara;T. Suzuki
• 通讯作者: T. Suzuki

Multi-input-and-Multi-Output Molecular Response Systems Based on Novel Redox Pairs with a Helical pi-Framework

基于具有螺旋 pi 框架的新型氧化还原对的多输入和多输出分子响应系统

• 发表时间: 2010
• 作者: T. Suzuki;Y. Ishigaki;H. Kawai;K. Fujiwara
• 通讯作者: K. Fujiwara