Collision-induced dissociation of V[sub [ital n]][sup +] ([ital n]=2--20) with Xe: Bond energies, dissociation pathways, and structures
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112 (United States)
The kinetic energy dependence of the collision-induced dissociation (CID) of V[sub [ital n]][sup +] ([ital n]=2--20) with xenon is studied by using a guided ion beam mass spectrometer. Examination of the general dissociation behavior over a broad collision energy range shows that vanadium cluster ions dissociate primarily by sequential atom loss, although dimer loss is also observed for several clusters, notably V[sub 4][sup +]. Bond energies of vanadium cluster ions, [ital D](V[sub [ital n][minus]1][sup +]--V), are determined from measurements of the CID thresholds. Bond energies for neutral vanadium clusters are derived by combining these ionic bond energies with literature ionization energies for V[sub [ital n]]. The bond energies of cationic and neutral vanadium clusters are very similar and show an even--odd oscillation below [ital n]=11 with even-sized clusters being more stable. For larger clusters, prominent stable clusters occur at [ital n]=13 and 15. These patterns in stability are found to correlate well with the reactivities of the neutral and cationic clusters, such that stable clusters are the least reactive. Possible electronic and geometric structures consistent with these stability and reactivity patterns are discussed.
- OSTI ID:
- 6073705
- Journal Information:
- Journal of Chemical Physics; (United States), Vol. 99:9; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ION-ATOM COLLISIONS
DISSOCIATION
VANADIUM IONS
XENON
BINDING ENERGY
ELECTRONIC STRUCTURE
ENERGY DEPENDENCE
ION BEAMS
ION PAIRS
KINETIC ENERGY
MASS SPECTROSCOPY
SIZE
STRUCTURE FACTORS
ATOM COLLISIONS
BEAMS
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY
FLUIDS
GASES
ION COLLISIONS
IONS
NONMETALS
RARE GASES
SPECTROSCOPY
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)
664400 - Experimentally Derived Information on Atomic & Molecular Properties- (1992-)