We report the synthesis and characterization of two hexapole [7]helicenes (H7Hs). Single crystal X-ray diffraction unambiguously confirms the molecular structure. H7H absorbs light, with distinct Cotton effect, from ultraviolet to the near-infrared (λmax = 618 nm). Cyclic voltammetry reveals nine reversible redox states, consecutively from -2 to +6. These chiroptical and electronic properties of H7H are inaccessible from helicene's small homologues.

中文翻译：

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六极杆 [7] Helicene 的合成与表征，一种圆形扭曲的手性纳米石墨烯

我们报告了两个六极杆 [7] 螺旋烯 (H7Hs) 的合成和表征。单晶 X 射线衍射明确证实了分子结构。H7H 吸收光，具有明显的棉花效应，从紫外到近红外（λmax = 618 nm）。循环伏安法揭示了九个可逆氧化还原状态，连续从 -2 到 +6。H7H 的这些手性和电子特性是 helicene 的小同系物无法获得的。