The E_1/2 potential associated with reduction of the linearly-functionalized 6,6′-biazulenic scaffold is accurately correlated to the combined σ_p Hammett parameters of the substituents over >600 mV range. X-ray crystallographic analysis of the 2,2′-dichloro-substituted derivative revealed unexpectedly short C–Cl bond distances, along with other metric changes, suggesting a non-trivial cycloheptafulvalene-like structural contribution.

中文翻译：

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通过沿分子轴的功能化调整 6,6'-双薁平台的氧化还原曲线

与线性功能化 6,6'-双薁支架还原相关的E _1/2电位与超过 >600 mV 范围的取代基的组合σ _p Hammett 参数精确相关。 2,2'-二氯取代衍生物的 X 射线晶体学分析显示出意外的短 C-Cl 键距以及其他度量变化，表明其具有类似环庚富瓦烯的结构贡献。