Bonding of metals to carbon rings. LaC[sub n[sup +]] isomers with La[sup +] inserted and attached to the ring

Journal Article · Wed Jun 29 04:00:00 EDT 1994 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00092a059· OSTI ID:6980666

Clemmer, D E; Shelimov, K B; Jarrold, M F ^[1]

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1. Northwestern Univ., Evanston, IL (United States)

In this communication we describe studies of small (n=12[minus]40) LaC[sub n][sup +] clusters and report the observation of two families of LaC[sub n][sup +] monocyclic rings. For clusters with an even number of carbon atoms, an isomer where the lanthanum atom appears to be inserted into the ring dominates, while for odd-numbered clusters, only isomers where the lanthanum appears to be attached to the outside (or inside) of the carbon ring are observed. The odd/even fluctuations in the relative abundances of the two isomers provide an important clue about the nature of the chemical bonding in these clusters. This information is necessary to unravel the mechanism of endohedral metallofullerence synthesis, since recent studies have shown that LaC[sub 60][sup +] polycyclic rings can be annealed into the endohedral metallofullerene with near unit efficiency. 19 refs., 2 figs.

• OSTI ID: 6980666
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 116:13; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ANNEALING
CARBON
CHARGED PARTICLES
CHEMICAL BONDS
COMPLEXES
DRIFT TUBES
ELEMENTS
FULLERENES
HEAT TREATMENTS
IONS
ISOMERS
LANTHANUM COMPLEXES
LASERS
MASS SPECTROMETERS
MEASURING INSTRUMENTS
MOLECULAR IONS
NONMETALS
RARE EARTH COMPLEXES
SOLID CLUSTERS
SPECTROMETERS
SYNTHESIS