非芳香性核心修饰的[30]六卟啉（2.1.1.2.1.1）和稠合[28]六卟啉（2.1.1.0.1.1）中的质子化触发的休克尔和莫比乌斯芳香转化
Protonation-Triggered Hückel and Möbius Aromatic Transformations in Nonaromatic Core-Modified [30]Hexaphyrin(2.1.1.2.1.1) and Annulated [28]Hexaphyrin(2.1.1.0.1.1).
作者信息
Dash Syamasrit, Ghosh Arindam, Srinivasan A, Suresh Cherumuttathu H, Chandrashekar Tavarekere K
机构信息
School of Chemical Sciences , National Institute of Science Education and Research (NISER) Bhubaneswar 752050 , Odisha, HBNI , India.
Inorganic and theoretical chemistry section, Chemical Science and Technology Division , CSIR-National Institute of Interdisciplinary Science and Technology , Trivandrum 695019 , Kerala , India.
出版信息
Org Lett. 2019 Dec 6;21(23):9637-9641. doi: 10.1021/acs.orglett.9b03805. Epub 2019 Nov 25.
Two 1,2-diphenyl-1,2-dithienylethene-embedded hexaphyrins and containing 30π and 28π electrons, respectively, in conjugation exhibit nonaromatic characteristics. Compound shows an unusual bond length equalization in its electronic structure. However, on protonation, exhibits Hückel aromatic characteristics while shows Möbius aromatic characteristics. The changes in aromaticity are accompanied by change in conformation from a figure-eight/twisted structure to an open extended structure.
两种嵌入1,2 - 二苯基 - 1,2 - 二噻吩乙烯的六卟啉，其共轭体系中分别含有30π和28π电子，表现出非芳香性特征。化合物在其电子结构中显示出不寻常的键长均等化。然而，质子化后，[具体化合物]呈现出休克尔芳香性特征，而[另一具体化合物]呈现出莫比乌斯芳香性特征。芳香性的变化伴随着构象从八字形/扭曲结构转变为开放伸展结构。
Zotero 插件