13C NMR study of Ca@C74: the cage structure and the site-hopping motion of a Ca atom inside the cage

Autor: Takeshi Kodama, Hiroyuki Nishikawa, Isao Ikemoto, Ryosuke Fujii, Yoko Miyake, Koichi Kikuchi, Shinzo Suzuki, Yohji Achiba
Rok vydání: 2004
Předmět:
Zdroj: Chemical Physics Letters. 399:94-97
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2004.08.146
Popis: The 13 C NMR spectra of Ca@C 74 have been measured at 22 and 70 °C. The cage symmetry is assigned to be D 3h . Two distinct features of the 13 C NMR spectra, different linewidths of each line and line sharpening at higher temperature, indicate that the Ca atom hops between the several stable sites inside the D 3h cage.
Databáze: OpenAIRE