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The Inside Story of Fullerene Anions: A 3 He NMR Aromaticity Probe
Author(s) -
Sternfeld Tamar,
Saunders Martin,
Cross R. James,
Rabinovitz Mordecai
Publication year - 2003
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.200351429
Subject(s) - aromaticity , fullerene , chemical shift , chemistry , helium , electron , carbon fibers , chemical physics , carbon 13 nmr , fullerene chemistry , computational chemistry , crystallography , materials science , molecule , stereochemistry , organic chemistry , composite number , physics , quantum mechanics , composite material
Fullerene anions with helium atoms contained inside the cage exhibit degrees of aromaticity that can be predicted through the measurement of 3 He chemical shifts (see picture). These chemical shifts help to demonstrate that the magnetic properties of fullerenes, and their anions, are not simply related to the number of carbon atoms or the number of electrons in the π system.