Collisional probes and possible structures of La2C80

Chahan Yeretzian; Klavs Hansen; Marcos M. Alvarez; K. S. Min; E. G. Gillan; Károly Holczer; Richard B. Kaner; Robert L. Whetten

doi:10.1016/0009-2614(92)85978-J

Collisional probes and possible structures of La₂C₈₀

Chahan Yeretzian, Klavs Hansen, Marcos M. Alvarez, K. S. Min, E. G. Gillan, Károly Holczer, Richard B. Kaner, Robert L. Whetten

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Abstract

The soluble molecule La₂C₈₀ recently reported by Alvarez et al. exhibits a robustness similar to other fullerenes. It survives intact for ≈ 10^-6s following impact against solid surfaces Si(100) at up to 200 eV, yielding an estimate E_f>4 eV for fragmentation processes. The high threshold for electron emission suggests that the electron affinity in La₂C^-₈₀ is significantly larger than in C₆₀. These facts seem to rule out an external site for either La atom and disfavor a network-site interpretation, and thus favor endohedral (encapsulation) sites. Among the possible cages, the I_h-C₈₀ fullerene appears to be highly favorable for the oxidation state (La³⁺)₂C^6-₈₀.

Original language	English (US)
Pages (from-to)	337-342
Number of pages	6
Journal	Chemical Physics Letters
Volume	196
Issue number	3-4
DOIs	https://doi.org/10.1016/0009-2614(92)85978-J
State	Published - Aug 14 1992
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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@article{c7197bf867d6458b97330b6c35bb4105,

title = "Collisional probes and possible structures of La2C80",

abstract = "The soluble molecule La2C80 recently reported by Alvarez et al. exhibits a robustness similar to other fullerenes. It survives intact for ≈ 10-6s following impact against solid surfaces Si(100) at up to 200 eV, yielding an estimate Ef>4 eV for fragmentation processes. The high threshold for electron emission suggests that the electron affinity in La2C-80 is significantly larger than in C60. These facts seem to rule out an external site for either La atom and disfavor a network-site interpretation, and thus favor endohedral (encapsulation) sites. Among the possible cages, the Ih-C80 fullerene appears to be highly favorable for the oxidation state (La3+)2C6-80.",

author = "Chahan Yeretzian and Klavs Hansen and Alvarez, {Marcos M.} and Min, {K. S.} and Gillan, {E. G.} and K{\'a}roly Holczer and Kaner, {Richard B.} and Whetten, {Robert L.}",

note = "Funding Information: The authors are indebted to X. Liu and Professor D. Klein for sharing their detailed results on the Cso structures, to R. Haufler for discussion of parallel work, and to Frangois Diederich for comments on metallofullerenes and higher fullerenes. This work has been supported by an NSF grant and ONR contract (to RLW) and by Packard Fellowships (RBK, RLW). K. Hansen and C. Yeretzian acknowledge the Norg~rd Foundation and the Swiss National Science",

year = "1992",

month = aug,

day = "14",

doi = "10.1016/0009-2614(92)85978-J",

language = "English (US)",

volume = "196",

pages = "337--342",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

number = "3-4",

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TY - JOUR

T1 - Collisional probes and possible structures of La2C80

AU - Yeretzian, Chahan

AU - Hansen, Klavs

AU - Alvarez, Marcos M.

AU - Min, K. S.

AU - Gillan, E. G.

AU - Holczer, Károly

AU - Kaner, Richard B.

AU - Whetten, Robert L.

N1 - Funding Information: The authors are indebted to X. Liu and Professor D. Klein for sharing their detailed results on the Cso structures, to R. Haufler for discussion of parallel work, and to Frangois Diederich for comments on metallofullerenes and higher fullerenes. This work has been supported by an NSF grant and ONR contract (to RLW) and by Packard Fellowships (RBK, RLW). K. Hansen and C. Yeretzian acknowledge the Norg~rd Foundation and the Swiss National Science

PY - 1992/8/14

Y1 - 1992/8/14

N2 - The soluble molecule La2C80 recently reported by Alvarez et al. exhibits a robustness similar to other fullerenes. It survives intact for ≈ 10-6s following impact against solid surfaces Si(100) at up to 200 eV, yielding an estimate Ef>4 eV for fragmentation processes. The high threshold for electron emission suggests that the electron affinity in La2C-80 is significantly larger than in C60. These facts seem to rule out an external site for either La atom and disfavor a network-site interpretation, and thus favor endohedral (encapsulation) sites. Among the possible cages, the Ih-C80 fullerene appears to be highly favorable for the oxidation state (La3+)2C6-80.

AB - The soluble molecule La2C80 recently reported by Alvarez et al. exhibits a robustness similar to other fullerenes. It survives intact for ≈ 10-6s following impact against solid surfaces Si(100) at up to 200 eV, yielding an estimate Ef>4 eV for fragmentation processes. The high threshold for electron emission suggests that the electron affinity in La2C-80 is significantly larger than in C60. These facts seem to rule out an external site for either La atom and disfavor a network-site interpretation, and thus favor endohedral (encapsulation) sites. Among the possible cages, the Ih-C80 fullerene appears to be highly favorable for the oxidation state (La3+)2C6-80.

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DO - 10.1016/0009-2614(92)85978-J

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SN - 0009-2614

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SP - 337

EP - 342

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3-4

ER -

Collisional probes and possible structures of La₂C₈₀

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