Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.
Chemistry. 2019 Apr 5;25(20):5173-5176. doi: 10.1002/chem.201900819. Epub 2019 Mar 22.
Internally 3,3'-biphenyl-, 2,2',5,5'-bithiophene-, and 2,5-thieno[3,2-b]thiophene-bridged [46]decaphyrins were prepared. In addition to the global 46π-conjugated circuits, the internal core-modified [32]heptaphyrin- and [30]hexaphyrin moieties in 2,2',5,5'-bithiophene- and 2,5-thieno[3,2-b]thiophene-bridged [46]decaphyrins also possess doubly twisted topologies (|L |=2) and are regarded as (doubly-twisted-annuleno)doubly-twisted-annulene variants. All these decaphyrins display distinct Hückel aromaticity owing to the global 46π-electronic networks but the contributions of the local half circuits were almost negligible due to the perpendicular orientation of the bridges.
合成了 3,3'-联苯、2,2',5,5'-联噻吩和 2,5-噻吩[3,2-b]噻吩桥联[46]十并苯。除了全局的 46π-共轭电路外，2,2',5,5'-联噻吩和 2,5-噻吩[3,2-b]噻吩桥联[46]十并苯中的内部核心修饰的[32]庚并苯和[30]六并苯部分也具有双重扭曲的拓扑结构（|L|=2），并被视为（双扭曲-并苯）双扭曲-并苯变体。由于全局的 46π-电子网络，所有这些十并苯都显示出明显的休克尔芳香性，但由于桥的垂直取向，局部半电路的贡献几乎可以忽略不计。
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