Photodissociation of metallo-carbohedrene (met-cars) cluster cations

Journal Article · Wed May 19 04:00:00 EDT 1993 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00063a081· OSTI ID:6043328

Pilgrim, J S; Duncan, M A ^[1]

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

Castleman and co-workers have recently reported the formation of especially stable metal-carbon clusters designated [open quotes]metallo-carbohedrenes[close quotes], or [open quotes]met-cars[close quotes]. In their work, metal-carbon mixed clusters having the formula M[sub 8]C[sub 12] form preferentially from plasmas containing a carbon precursor and transition metals (e.g., Ti[sub 8]C[sub 12]). We report here the first mass-selected photo-dissociation experiments on met-cars clusters. These experiments reveal the decomposition mechanism of these species and provide new insight into their bonding and stabilities. These photodissociation experiments indicate that there are at least two general mechanisms important in met-cars cluster decomposition, metal atom elimination and M-C[sub 2] elimination. Chromium and iron met-cars clusters are suggested to be less stable overall than titanium and vanadium systems, while the M-C[sub 2] interactions are suggested to be especially strong for zirconium met-cars cluster. 10 refs., 1 fig.

• DOE Contract Number: FG09-90ER14156
• OSTI ID: 6043328
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 115:10; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400500* -- Photochemistry
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
DECOMPOSITION
IRON COMPOUNDS
LASERS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
ZIRCONIUM COMPOUNDS