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Digitale Medien

Photoelectron spectroscopy and electronic structure of Ca@C60 (1993)

Wang, Lai-Sheng ; Alford, J. M. ; Chai, Y. ; [weitere]

Springer

The European physical journal 26 (1993), S. 297-299

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Details

ISSN: 1434-6079

Schlagwort(e): 36.40.+d ; 33.60.Cv

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The electronic structure of an isolated Ca@C60 molecule was probed by photoelectron spectroscopy (PES) of Ca@C 60 − , generated by laser desorption of a preformed Ca@C60/fullerene thin film. The PES spectrum of Ca@C60 was found to be similar to that of C 60 − , except that Ca@C60 has an electron affinity of 3.0 eV, about 0.3 eV higher than that of C60. The spectrum suggests that Ca atom donates its two 4s electrons to the C60 t lu lowest unoccupied molecular orbital. Thus, the interaction between the central Ca atom and C60 is quite ionic, and Ca@C60 can essentially be expressed as Ca2+@C 60 2− .

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01425696

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