Endohedral encapsulation of lithium in C-70
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A new diatomic molecule-containing endohedral fullerenes were prepared by ion implantation technique (introducing negatively charged C-70 into a low temperature lithium plasma column by a strong exial magnetic field). The species prepared were Li"C-70 and Li-2"C-70 and ionized by surface ionization. Their existance was demonstrated through high sensitivity, magnetic mass spectrometer. The corresponding endohedral ions undergo the Rice shrinkwrap mechanism: a mass -analyzed ion spectrum demonstrates the loss of a C-2 unit from the cage. The observed ionization energies of endohedral molecules were 5.1 for all 0.1 eV and 5.3 for all 0.1 eV, respectively.
Кључне речи:endohedral metalofullerenes / ionization energies / clusters / mass spectrometry
Извор:Materials Science Forum, 2005, 480, 351-354
- 1st International Meeting on Applied Physics, Oct 13-18, 2003, Badajoz, Spain
ISSN: 0255-5476 (print)