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首页> 外文期刊>Chemistry: A European journal >A Dynamic Tricopper Double Helicate
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A Dynamic Tricopper Double Helicate

机译：动态Tricopper双螺旋

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摘要

The reaction between 8-ami-noquinoline,1,10-phenanthoIine-2,9-di-carbaldehyde,and copper(I)tetrafluor-oborate gave a quantitative yield of a tricopper double helicate.The presence of dynamic covalent imine(C=N)bonds allowed this assembly to participate in two reactions not previously known in helicate chemistry:1)It could be prepared through subcomponent substitution from a dicopper double helicate that contained aniline residues.An electron-poor aniline was quantitatively displaced;a more electron-rich aniline competed effectively with the aminoquinoline,setting up an equilibrium between dicopper and tricopper helicates that could be displaced towards the tricopper through the addition of further copper(I).2)Both dicopper and tricopper helicates could be prepared simultaneously from a mixture of phenanthroline dialde-hyde,aniline,and aminoquinoline,which contained all possible imine condensation products in equilibrium.Following the addition of copper(I),thermodynamic equilibration on both covalent and coordinative levels eliminated all partially-formed and mixed imine li-gands from the mixture,leaving the helicates as exclusive products.
机译：8-氨基-喹啉，1,10-菲-2--2,9-二甲醛与四氟硼酸铜（I）的反应可定量获得三铜双螺旋酸酯。动态共价亚胺（C = N）键使该组装体参与了之前在螺旋化学中未知的两个反应：1）它可以通过从含有苯胺残基的双铜双螺旋中通过亚组分取代来制备。丰富的苯胺与氨基喹啉有效竞争，在双铜和三铜螺旋之间建立平衡，可以通过添加更多的铜向三铜置换（I）.2）双铜和三铜螺旋均可由菲咯啉的混合物同时制备乙醛，苯胺和氨基喹啉，其中所有可能的亚胺缩合产物均处于平衡状态。在加入铜（I）之后，热力学平衡共价和配位水平都消除了混合物中所有部分形成和混合的亚胺配体，使螺旋产物成为专有产物。

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