Institut für Chemie, Abteilung Anorganische Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany.
Dalton Trans. 2018 Oct 7;47(37):12827-12837. doi: 10.1039/c8dt03038c. Epub 2018 Sep 5.
Readily accessible group 15 biradicals of the type [E(μ-NR)] (E = P-Bi) form planar 6π-electronic-4-membered heterocycles featuring open-shell singlet biradical character. They can be utilized to activate small molecules bearing single, double and triple bonds as well as to trap labile in situ generated fragments. In the reaction with CO and R-NC (R = small alkyl or aryl substituent) pnictogen analogues of cyclopentane-1,3-diyl are formed which represent robust molecular switches. Group 15 biradicals with two different radical sites display regioselectivity upon addition of small molecules.
易于获得的类型 [E(μ-NR)]（E = P-Bi）的基团 15 双自由基形成具有开壳单重双自由基特征的平面 6π 电子四元杂环。它们可用于活化带有单键、双键和叁键的小分子以及捕获不稳定的原位生成的片段。在与 CO 和 R-NC（R = 小烷基或芳基取代基）的反应中，形成了戊烷-1,3-二基的磷类似物，它们代表了坚固的分子开关。具有两个不同自由基位点的基团 15 双自由基在添加小分子时表现出区域选择性。
