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Subtleties with Sulfur: Calixarenes as Uranophiles
Author(s) -
Asfari Zouhair,
Bilyk Alexander,
Dunlop John W. C.,
Hall Annegret K.,
Harrowfield Jack M.,
Hosseini M. Wais,
Skelton Brian W.,
White Allan H.
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010216)40:4<721::aid-anie7210>3.0.co;2-g
Subject(s) - calixarene , sulfur , chemistry , polymer science , organic chemistry , molecule
The exchange of the methylene bridges in p‐t Bu‐calix[4]arene for sulfur produces a ligand seemingly perfectly suited for uranyl ions. Unlike most other metals, uranium does not bind to the four sulfur centers but is encapsulated by the ligand through binding to all four phenoxide groups (see picture). In contrast, calix[4]arene itself is dimensionally too restricted to function better than as a unidentate ligand for the uranyl ion.