Pyramidal structures of lanthanide-C60 clusters (Lnμ(C60)m: Ln = Eu and Ho)

Satoshi Nagao, Yuichi Negishi, Akiko Kato, Yoshiaki Nakamura, Atsushi Nakajima, Koji Kaya

研究成果: Article査読


Novel lanthanide organometallic clusters, Lnn(C60)m, consisting of lanthanide atoms (Ln; Ln = Eu and Ho) and C60 molecules were produced in gas phase by a two-laser vaporization method. The Lnn(C60)m clusters were produced predominantly at compositions of (n, m) = (n, n + 3) [n = 1-4]. These stoichiometries showed no chemisorption reactivity toward CCl4 and O2 reactants. The cluster having (1, 4) composition is proposed to form a tetrahedral structure, in which a Ln atom is surrounded by four C60 molecules. In larger clusters with (n, n + 3) composition, each Ln atom is found in a local (1, 4) group. Together with the results of sequential chemisorption of Cl atoms on cluster cations, photoelectron spectroscopy of cluster anions leads us to conclude that Ln1(C60)m clusters are charge-transfer complexes expressed as Ln1x+(C60)mx-, and that Eu and Ho atoms exist as Eu2+ and Ho3+ ions, respectively.

ジャーナルJournal of Physical Chemistry A
出版ステータスPublished - 1999 11 11

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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