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Oxidatively Stable, Aqueous Europium(II) Complexes through Steric and Electronic Manipulation of Cryptand Coordination Chemistry
Author(s) -
Gamage NipuniDhanesha H.,
Mei Yujiang,
Garcia Joel,
Allen Matthew J.
Publication year - 2010
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/anie.201002789
Subject(s) - cryptand , steric effects , chemistry , aqueous solution , europium , ligand (biochemistry) , chemical stability , coordination complex , ion , inorganic chemistry , stereochemistry , organic chemistry , metal , biochemistry , receptor
A series of cryptands has been prepared and they demonstrate the relationship between oxidative stability of aqueous Eu II and ligand properties (see figure). One of these Eu II complexes is more stable than Fe II in hemoglobin and appears to be the most oxidatively‐stable aqueous Eu II species known. The high stability of Eu II is expected to enable the use of the unique magnetic and optical properties of this ion in vivo.