2D NMR Characterization of the La@C82 Anion (pages 3282–3285)
Takahiro Tsuchiya, Takatsugu Wakahara, Yutaka Maeda, Takeshi Akasaka, Markus Waelchli, Tatsuhisa Kato, Hiroshi Okubo, Naomi Mizorogi, Kaoru Kobayashi and Shigeru Nagase
Article first published online: 18 APR 2005 | DOI: 10.1002/anie.200500039
Mapping of bond connectivity in the carbon cage of the endohedral metallofullerene anion [La@C82-A]− (see picture, bottom) and definitive assignment of all the NMR signals were achieved for the first time by means of 2D INADEQUATE NMR spectroscopy measurements (see picture, top). The position of the encapsulated lanthanum atom (red sphere) was also confirmed by measurements of relaxation time T1 for the cage carbon atoms.