A Ternary Crown Ether “Supercomplex”: X‐Ray Structure Analysis of the 1:1:1 Adduct of Dibenzo‐[18]‐Crown‐6, Potassium Iodide, and Thiourea

A Ternary Crown Ether “Supercomplex”: X‐Ray Structure Analysis of the 1:1:1 Adduct of Dibenzo‐[18]‐Crown‐6, Potassium Iodide, and Thiourea
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三元冠醚“超复合物”:二苯并-[18]-冠-6、碘化钾和硫脲的 1:1:1 加合物的 X 射线结构分析

DOI:
10.1002/anie.198110451
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发表时间:
1981
期刊:
影响因子:
--
通讯作者:
W. Saenger
W. Saenger
中科院分区:
--
文献类型:
--
作者:
R. Hilgenfeld;W. Saenger

文献摘要

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对于形成三元“超配合物”,参与阴离子的性质具有决定性的重要性。在二苯并-18-冠-6、碘化钾和硫脲的聚合物1:1:1络合物中,K+位于冠醚空腔的中心,并与I-配位;硫脲形成由H-桥连接的聚合物链。只有易极化的离子,如I-,才能作为冠醚络合物和硫脲链之间的连接键。
For the formation of ternary “super complexes” the character of the participating anions is of decisive importance. In the polymeric 1:1:1 complexes of dibenzo‐18‐crown‐6, potassium iodide, and thiourea, K+is situated in the center of the crown ether cavity and is additionally coordinated by I−; thiourea forms polymeric chains linked by H‐bridges. Only readily polarizable ions such as I−are capable of functioning as connecting links between crown ether complexes and thiourea chain.