Gas phase antimony/magnesium/oxygen clusters

Journal Article · Thu Sep 15 00:00:00 EDT 1994 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100088a042· OSTI ID:6922909

Deng, H T; Okada, Y; Foltin, M; Castleman, Jr, A W ^[1]

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1. Pennsylvania State Univ., University Park, PA (United States)

Antimony/magnesium/oxygen clusters are produced by a gas aggregation source, in which a mixture of antimony and magnesium is vaporized and reacted with N[sub 2]O introduced in helium carrier gas. The resulting product distribution is detected by a time-of-flight mass spectrometer following ionization with a KrF excimer laser. Four types of cluster products are observed: Sb[sub x][sup +], Sb[sub x]Mg[sub y]O[sub z][sup +], Sb[sub x]Mg[sub y][sup +], and Mg[sub y]O[sub z][sup +]. The mass spectral intensity distributions display enhanced abundances for Mg[sub 2]O[sup +], Sb[sub 2[minus]4]Mg[sub 3]O[sup +], Sb[sub 1[minus]4]Mg[sub 2]O[sup +], Sb[sub 4]Mg[sup +], Sb[sub 5]Mg[sub 2][sup +], and Sb[sub 6]Mg[sub 2][sup +]. The experimental observation of Mg[sub 2]O[sup +] and Mg[sub 3]O[sup +] shows that the suboxides of group 2 are stable species, consistent with theoretical predictions. The binding abilities of antimony clusters to magnesium and magnesium oxides are found to be dependent on cluster size. When the number of antimony atoms in the clusters is smaller than 6, Sb[sub x]Mg[sub y]O[sub z][sup +] are the main products dominating the mass distribution the mass distribution. On the other hand, when the cluster size of Sb[sub x] is larger than 6, only Sb/Mg alloy clusters are observed. 52 refs., 3 figs., 1 tab.

• DOE Contract Number: FG02-92ER14258
• OSTI ID: 6922909
• Journal Information: Journal of Physical Chemistry; (United States), Vol. 98:37; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
ANTIMONY
CHEMICAL REACTIONS
EVAPORATION
MAGNESIUM
NITROUS OXIDE
SOLID CLUSTERS
SYNTHESIS
ANTIMONY IONS
CATIONS
EXCIMER LASERS
HELIUM
IONIZATION
MAGNESIUM IONS
MAGNESIUM OXIDES
MASS SPECTROSCOPY
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CHALCOGENIDES
CHARGED PARTICLES
ELEMENTS
FLUIDS
GAS LASERS
GASES
IONS
LASERS
MAGNESIUM COMPOUNDS
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RARE GASES
SPECTROSCOPY
400201* - Chemical & Physicochemical Properties
400102 - Chemical & Spectral Procedures
360101 - Metals & Alloys- Preparation & Fabrication
400500 - Photochemistry