全卤代环戊二烯基阳离子的[2+2]环加成产物：[CCl]和[CBr]二价阳离子盐的结构表征
The [2+2] cycloaddition product of perhalogenated cyclopentadienyl cations: structural characterization of salts of the [CCl] and [CBr] dications.
作者信息
Rupf Susanne Margot, Pröhm Patrick, Malischewski Moritz
机构信息
Freie Universität Berlin, Institut für Chemie und Biochemie, Institut für Anorganische Chemie, Fabeckstraße 34-36, 14195 Berlin, Germany.
出版信息
Chem Commun (Camb). 2020 Aug 25;56(68):9834-9837. doi: 10.1039/d0cc04226a.
Instead of monomeric cyclopentadienyl cations, the low-temperature reaction of hexachloro- and hexabromocyclo-pentadiene (C5Cl6 and C5Br6) with powerful Lewis acids SbF5 and AsF5 in SO2ClF yields salts of perhalogenated dications [C10Cl10][Sb3F16]2 and [C10Br10][As2F11]2 which are characterized via single crystal X-ray diffraction and NMR spectroscopy. Additionally, this reactivity is rationalized by quantum-chemical calculations.
六氯环戊二烯（C5Cl6）和六溴环戊二烯（C5Br6）与强路易斯酸SbF5和AsF5在SO2ClF中进行低温反应，生成的不是单体环戊二烯阳离子，而是全卤代双阳离子盐[C10Cl10][Sb3F16]2和[C10Br10][As2F11]2，这些盐通过单晶X射线衍射和核磁共振光谱进行表征。此外，通过量子化学计算对这种反应活性进行了合理化解释。
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