Collision-induced dissociation of V[sub [ital n]][sup +] ([ital n]=2--20) with Xe: Bond energies, dissociation pathways, and structures

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.465853· OSTI ID:6073705

Su, C; Hales, D A; Armentrout, P B ^[1]

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1. 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), Journal Name: Journal of Chemical Physics; (United States) Vol. 99:9; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
664400 -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
BEAMS
BINDING ENERGY
CHARGED PARTICLES
COLLISIONS
DISSOCIATION
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY
ENERGY DEPENDENCE
FLUIDS
GASES
ION BEAMS
ION COLLISIONS
ION PAIRS
ION-ATOM COLLISIONS
IONS
KINETIC ENERGY
MASS SPECTROSCOPY
NONMETALS
RARE GASES
SIZE
SPECTROSCOPY
STRUCTURE FACTORS
VANADIUM IONS
XENON