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A Ternary Crown Ether “Supercomplex”: X‐Ray Structure Analysis of the 1:1:1 Adduct of Dibenzo‐[18]‐Crown‐6, Potassium Iodide, and Thiourea
Author(s) -
Hilgenfeld Rolf,
Saenger Wolfram
Publication year - 1981
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198110451
Subject(s) - thiourea , crown ether , chemistry , adduct , iodide , ternary operation , medicinal chemistry , ether , inorganic chemistry , polymer chemistry , potassium , crystallography , ion , organic chemistry , computer science , programming language
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.