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Ion Dynamics in Confined Spaces: Sodium Ion Mobility in Icosahedral Container Molecules
Author(s) -
Podewitz Maren,
van Beek Jacco D.,
Wörle Michael,
Ott Timo,
Stein Daniel,
Rüegger Heinz,
Meier Beat H.,
Reiher Markus,
Grützmacher Hansjörg
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.201003441
Subject(s) - dodecahedron , icosahedral symmetry , ion , sodium , container (type theory) , chemical physics , crystallography , chemistry , magenta , materials science , metallurgy , organic chemistry , inkwell , composite material
Cage it : A central PH 2 − ion (see picture, magenta) is encapsulated within a container of twelve tert ‐butoxides (red and black) in an icosahedral arrangement. The twelve or thirteen sodium countercations are dynamically disordered over the twenty corners of a regular dodecahedron (blue). The estimated activation barriers for sodium exchange are remarkably low (10–30 kJ mol −1 ) and in the range of fast Li + ion conductors.