Ion‐Pair Complexation with Dibenzo[21]Crown‐7 and Dibenzo[24]Crown‐8 bis‐Urea Receptors | Zendy

Mäkelä Toni | Zendy; Kiesilä Anniina | Zendy; Kalenius Elina | Zendy; Rissanen Kari | Zendy

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Ion‐Pair Complexation with Dibenzo[21]Crown‐7 and Dibenzo[24]Crown‐8 bis‐Urea Receptors

Author(s) -

Mäkelä Toni,

Kiesilä Anniina,

Kalenius Elina,

Rissanen Kari

Publication year - 2016

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.201602362

Subject(s) - chemistry , rubidium , halide , crystallography , caesium , selectivity , crown ether , crystal structure , 18 crown 6 , affinities , ion , inorganic chemistry , stereochemistry , potassium , organic chemistry , catalysis

Synthesis and ion‐pair complexation properties of novel ditopic bis‐urea receptors based on dibenzo[21]crown‐7 ( R 1 ) and dibenzo[24]crown‐8 ( R 2 ) scaffolds have been studied in the solid state, solution, and gas phase. In a 4:1 CDCl 3 /[D 6 ]DMSO solution, both receptors clearly show positive heterotropic cooperativity toward halide anions when complexed with Rb + or Cs + , with the halide affinity increasing in order I −

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