Author(s):      COX DM; CAMERON SD; TUINMAN A; GAKH A; ADCOCK JL; COMPTON RN;
                   HAGAMAN EW; KNIAZ K; FISCHER JE; STRONGIN RM; CICHY MA;
                   SMITH AB

Title:          X-RAY PHOTOELECTRON AND NMR-STUDIES OF POLYFLUORINATED C-60--
                   EVIDENCE THAT C-C BONDS ARE BROKEN

Source:         JOURNAL OF THE AMERICAN CHEMICAL SOCIETY V0116 N3 FEB 9 1994
                   pp. 1115-1120.

Abstract:       In order to better understand the properties and composition
                of solids pf polyfluorinated C-60, X-ray photoelectron
                spectroscopy (XPS) was used to characterize several
                different C60Fx samples synthesized in two different
                laboratories. Quantitative measurements of the F-1s, C-1s
                and O-1s, XPS signals established the elemental
                stoichiometry of each sample. The F/C ratios for the
                different samples ranged from 28/60 to 53/60 in general
                agreement with previous mass spectroscopy studies of each
                sample. C-1s energies and shifts as well as solid-state
                nuclear magnetic resonance studies provided additional
                information about the degree of fluorination and level bf C-
                C bond breaking.