Metallo-carbohedrenes. Chromium, iron, and molybdenum analogues

Journal Article · Wed Jul 28 04:00:00 EDT 1993 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00068a065· OSTI ID:5833139

Pilgrim, J S; Duncan, M A ^[1]

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1. Univ. of Georgia, Athens (United States)

The formation of especially stable metal-carbon clusters, which have been designated metallo-carbohedrenes by Castleman and co-workers, has previously been reported for the early transition metals (Ti, Zr, Hf, V). Clusters having the formula M[sub 8]C[sub 12] were recognized as especially stable species which were formed in plasmas containing the metal and a carbon-containing precursor. A similar laser induced plasma technique is employed to synthesize chromium, molybdenum, and iron analogues of these so-called [open quotes]met-cars[close quotes] clusters and to study their photodissociation behavior. These observations suggest that met-cars cluster formation is a more general phenomenon than previously recognized. While chromium and molybdenum form the [open quotes]super-magic[close quotes] 8/12 stochiometry efficiently, met-cars formation competes with other special stoichiometries in the iron clusters. Implications for the bonding properties in met-cars systems are discussed. 22 refs., 5 figs.

• DOE Contract Number: FG09-90ER14156
• OSTI ID: 5833139
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 115:15; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
400500* -- Photochemistry
CHEMICAL REACTIONS
CHROMIUM COMPLEXES
COMPLEXES
DECOMPOSITION
IRON COMPLEXES
LASERS
MASS SPECTROSCOPY
MOLYBDENUM COMPLEXES
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PLASMA
SPECTROSCOPY
STOICHIOMETRY
SYNTHESIS
TRANSITION ELEMENT COMPLEXES