XPS probes of carbon-caged metals

✍ Scribed by J.H. Weaver; Y. Chai; G.H. Kroll; C. Jin; T.R. Ohno; R.E. Haufler; T. Guo; J.M. Alford; J. Conceicao; L.P.F. Chibante; A. Jain; G. Palmer; R.E. Smalley

• Book ID: 103035320
• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 279 KB
• Volume: 190
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(92)85173-8

✦ Synopsis

X-ray photoemission spectral probes of endohedral lanthanum-fuilerene complexes, La@Cn, show that the central La atom is in a formal charge state close to +3, and has been effectively protected from reaction with water an oxygen by the enclosing fullerene cage. Similar results were obtained with endohedral yttrium complexes, Y@Cn, and the first carbon-caged metal cluster, Y2@C82. EPR spectral results are also reported for Y@Cs2 which is found to be an S= 1/2 spin system with a 0.48 G hypertine splitting (at 9.216 GHz) centered at g= 1.9999 ( 1 ).