<i>meso</i>
-Aryl [20]π Homoporphyrin: The Simplest Expanded Porphyrin with the Smallest Möbius Topology
作者:K. S. Anju、Mainak Das、B. Adinarayana、Cherumuttathu H. Suresh、A. Srinivasan
DOI:10.1002/anie.201709859
日期:2017.12.4
unstable conjugated homoporphyrin was successfully stabilized by introducing meso‐aryl substitutents. It was evident from the moderate diatropic ring current found by NMR analysis that the newly formed 20π conjugated free base and its protonated form exhibited Möbius aromatic character. Furthermore, complexation as a ligand with an RhI ion afforded a unique binding mode and retained the Möbius aromaticity
通过引入内消旋芳基取代基成功地稳定了不稳定的共轭高卟啉。从通过NMR分析发现的适度的变径环电流可以明显看出,新形成的20π共轭游离碱及其质子化形式表现出莫比乌斯的芳香特性。此外,作为配体与Rh I离子的络合提供了独特的结合模式,并保留了Möbius芳香性。总体而言,这些化合物是最小的莫比乌斯芳族分子,这已通过光谱和晶体结构分析得到证实,并得到了理论研究的支持。