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Halide‐Ion Encapsulation by a Flexible Dicopper( II ) Bis‐Tren Cryptate
Author(s) -
Amendola Valeria,
Bastianello Emanuela,
Fabbrizzi Luigi,
Mangano Carlo,
Pallavicini Piersandro,
Perotti Angelo,
Manotti Lanfredi Anna,
Ugozzoli Franco
Publication year - 2000
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(20000818)39:16<2917::aid-anie2917>3.0.co;2-0
Subject(s) - halide , chemistry , polyatomic ion , bromide , aqueous solution , ion , inorganic chemistry , intermetallic , crystal structure , crystallography , metal , polymer chemistry , organic chemistry , alloy
The appearance of a bright yellow color signals the inclusion of a halide ion (X=Cl, Br, I) into the dicopper( II ) cryptate 1 in aqueous solution at pH 5.2. The X − ion bridges the two metal centers, as is shown by the crystal structure of the bromide inclusion complex. At pH 8, X − is replaced by the smaller OH − ion, and the solution turns emerald green. The cage can adjust its intermetallic cavity to include polyatomic anions as large as N 3 − and NCS − .