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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Cp* as a removable protecting group: Low valent Zn(i) compounds by reductive elimination, protolytic and oxidative cleavage of Zn-Cp*
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Cp* as a removable protecting group: Low valent Zn(i) compounds by reductive elimination, protolytic and oxidative cleavage of Zn-Cp*

机译:Cp *作为可去除的保护基:通过对锌-Cp *的还原消除,蛋白水解和氧化裂解来形成低价Zn(i)化合物

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摘要

Zn-Cp* bond cleavage reactions leading to novel monovalent cationic zinc species are presented (Cp* = pentamethylcyclopentadienyl). The treatment of [Zn_2Cp*_2] with two equiv. of [H(Et _2O)_2][BAr_4 ~F] (BAr_4 ~F = B{C_6H_3(CF_3)_2} _4) yields the triple-decker complex [Cp*_Zn _4(Et_2O)_2][BAr_4 ~F] (1) via protolytic removal of a Cp* ligand as Cp*H, whereas the reaction with an equimolar amount of [FeCp_2][BAr_4 ~F] (Cp = cyclopentadienyl) results in the formation of [Cp*Zn_2(Et _2O)_3][BAr_4 ~F] (2) under oxidative cleavage of a Cp* ring giving decamethylfulvalene, (Cp*) _2, and [FeCp_2] as by-products. The molecular structures of compounds 1 and 2 are established by single-crystal X-ray diffraction studies. A new synthetic pathway for the formation of [Zn_2Cp* _2] based on the reductive elimination of Cp*H from in situ formed Cp*ZnH is presented.
机译:提出了导致新的单价阳离子锌物种的Zn-Cp *键断裂反应(Cp * =五甲基环戊二烯基)。用两个当量处理[Zn_2Cp * _2]。 [H(Et _2O)_2] [BAr_4〜F](BAr_4〜F = B {C_6H_3(CF_3)_2} _4)的乘积产生三层复合物[Cp * _Zn _4(Et_2O)_2] [BAr_4〜F] (1)通过蛋白水解去除Cp *配体Cp * H,而与等摩尔量的[FeCp_2] [BAr_4〜F](Cp =环戊二烯基)的反应导致形成[Cp * Zn_2(Et _2O) _3] [BAr_4〜F](2)在Cp *环的氧化裂解下得到十甲基富瓦烯,(Cp *)_2和[FeCp_2]作为副产物。化合物1和2的分子结构是通过单晶X射线衍射研究确定的。提出了一种从原位形成的Cp * ZnH中还原消除Cp * H的新方法来合成[Zn_2Cp * _2]。

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