title: Rational synthesis, enrichment, and (13)C NMR spectra of endohedral C(60) and C(70) encapsulating a helium atom.
abstract: Endohedral fullerenes encapsulating a helium atom, i.e., He@C(60) and He@C(70), at occupation levels of 30% were prepared by rational chemical synthesis. The existence of weak interactions between the inner helium and the outer fullerene cages was demonstrated by experimental and computational investigations.
authors.affiliation: Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan.
authors.forename: Yuta
authors.initials: Y
authors.lastname: Morinaka
authors.forename: Fumiyuki
authors.initials: F
authors.lastname: Tanabe
authors.forename: Michihisa
authors.initials: M
authors.lastname: Murata
authors.forename: Yasujiro
authors.initials: Y
authors.lastname: Murata
authors.forename: Koichi
authors.initials: K
authors.lastname: Komatsu
mesh_terms: D002247:Carbon Isotopes; D003198:Computer Simulation; D037741:Fullerenes / Q000737:chemistry*; D006371:Helium / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular
chemical_list: D002247:Carbon Isotopes; D037741:Fullerenes; C069836:fullerene C70; D006371:Helium; C069837:fullerene C60