Configurationally Stable Chiral Dithia-Bridged Hetero[4]helicene Radical Cation: Electronic Structure and Absolute Configuration.

Bettina D Gliemann,Ana G Petrovic,Eva M Zolnhofer,Pavlo O Dral,Frank Hampel,Georg Breitenbruch,Philipp Schulze,Vijay Raghavan,Karsten Meyer,Prasad L Polavarapu,Nina Berova,Milan Kivala

CHEMISTRY-AN ASIAN JOURNAL（2017）

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摘要

A stable chiral hetero[4] helicene radical cation was synthesized and characterized by UV/Vis absorption and EPR spectroscopy, as well as X-ray crystallography. For the first time, a combination of chiroptical methods involving ECD, ORD, and VCD, supported by quantum mechanical predictions, enabled the elucidation of the absolute configuration of such open-shell helical species.

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关键词

absolute configuration,cations,chiroptical methods,helicenes,radicals

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