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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Temperature-assisted formation of reversible metallophilic Au-Ag interaction arrays
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Temperature-assisted formation of reversible metallophilic Au-Ag interaction arrays

机译:可逆金属AU-AG相互作用阵列的温度辅助形成

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摘要

A temperature-controlled self-assembly process in a solution of [Ag(terpy)](n)(n+) and [Au(C6F5)(2)](-) units has been performed. For this, the crystallisation of the complex [{Au(C6F5)(2)}Ag(terpy)](n) under the same experimental conditions, changing only the temperature, allows the synthesis of polymorphs [{Au(C6F5)(2)}(2)Ag-2(terpy)(2)](n) (2a) at 298 K and [{Au(C6F5)(2)}Ag(terpy)](n) (2b) at 280 K. The X-ray diffraction studies previously reported for 2a revealed a polymeric structure with an unusual + + - - + + - - charge sequence, whereas for polymorph 2b, a more classical + - + - disposition has been obtained. The conversion of one polymorph into the other can be achieved by simple dissolution of one of them and by recrystallisation at the corresponding temperature. The mechanism of the formation of each polymorph is proposed in view of their H-1 NMR, H-1-PGSE NMR and molar conductivity measurements.
机译:已经进行了[Ag(TERPY)](N)(N +)和[AU(C6F5)(2)]( - )单元的溶液中的温度控制的自组装方法。 为此,在相同的实验条件下,络合物的结晶[{Au(C6F5)(2)} Ag(Terpy)](n)仅改变温度,允许合成多晶型物[{Au(C6F5)(2 )(2)Ag-2(2)(2)(2a)(2a)在298k和[{au(au(c6f5)(2)} Ag(Terpy)](n)(n)(2b),在280k。 先前报道了2A的X射线衍射研究揭示了具有不寻常的+ + - + + - 电荷序列的聚合物结构,而对于多晶型2B,已经获得了更典型的+ - +倾向。 通过简单地溶解其中一种并通过相应温度的重结晶来实现一种多晶型物进入另一个的转化物。 考虑到其H-1 NMR,H-1-PGSE NMR和摩尔电导率测量,提出了每个多晶型物的形成机制。

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