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A Calix‐bis‐crown with Hard and Soft Crown Cavities: Heterobinuclear K + /Ag + Complexation in Solid and Solution States
Author(s) -
Lee Jai Young,
Kim Hyun Jee,
Park Chul Soon,
Sim Wonbo,
Lee Shim Sung
Publication year - 2009
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200901580
Subject(s) - supramolecular chemistry , crown (dentistry) , characterization (materials science) , metal , crystallography , 15 crown 5 , ion , metal ions in aqueous solution , chemistry , materials science , stereochemistry , nanotechnology , crown ether , organic chemistry , crystal structure , composite material
Supramolecular complex : We describe the synthesis and structural characterization of the unsymmetrical calix[4]‐bis‐crown and its heterodinuclear K + and Ag + complex as a first case (see figure): both metal ions are stabilized not only by donor–metal dative bonds but also cation–π interactions, which can be visualized in terms of a chopsticks‐type π‐coordination process.