Preparation of ligand-stabilized [P4O4]2+ by controlled hydrolysis of a Janus head type diphosphorus trication.

Preparation of ligand-stabilized [P4O4]2+ by controlled hydrolysis of a Janus head type diphosphorus trication.
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通过 Janus 头型二磷三阳离子的控制水解制备配体稳定的 [P4O4]2

DOI:
10.1002/anie.201001363
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发表时间:
2010
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影响因子:
--
通讯作者:
K. Lammertsma
K. Lammertsma
中科院分区:
--
文献类型:
--
作者:
J. J. Weigand;K.-O. Feldmann;A. K. C. Echterhoff;A. Ehlers;K. Lammertsma

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在无机或有机化合物中引入多个阳离子电荷会显著影响它们的反应活性,因为它们的亲电性和电子亲和力显著增加。[1]在有机化学领域,自激活硅基辅助聚Onio取代(SASAPOS)协议[2]代表了一种制备壮观的聚阳离子骨架的有效方法,例如,带有卟啉核心的20倍阳离子簇。[2A]到目前为止,SASAPOS协议主要应用于基于卤代烃的体系。在无机化学中的应用极为罕见。在一项开创性的研究中,Weiss和Engel证明,通过用适当的配体(L,例如4-二甲氨基吡啶(DMAP))和Me3SiOTf(方案1)处理PCl3,可以生成二阳离子和三阳离子的磷(III)化合物I和II。[3]阳离子I和II完全是根据光谱和化学分析数据提出的,是三价磷化合物定向的罕见例子。
Introducing multiple cationic charges into inorganic or organic compounds dramatically influences their reactivities owing to a marked increase in electrophilicity and electron affinity.[1] In the realm of organic chemistry, the self-activated silyl-assisted poly-onio-substitution (SASAPOS) protocol [2] represents a powerful method for the preparation of spectacular polycationic frameworks, for example, a twentyfold cationic cluster with a porphyrin core.[2a] So far, the SASAPOS protocol has been predominantly applied to halogenated hydrocarbon-based systems. Applications in inorganic chemistry are extremely rare. In a pioneering study, Weiss and Engel showed that di-and tricationic phosphorus (III) compounds I and II may be generated by treating PCl3 with an appropriate ligand (L; for example, 4-dimethylaminopyridine (DMAP)) and Me3SiOTf (Scheme 1).[3] Cations I and II were proposed solely on the basis of spectroscopic and chemical analysis data and represent rare examples of di-or trications of trivalent phosphorus compounds.[3, 4]
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