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FORMATION AND DECOMPOSITION OF HIGH-MASS METAL-OXYGEN CLUSTER IONS IN THE FAST-ATOM-BOMBARDMENT OF LANTHANIDE SALTS
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UNSPECIFIED (1995) FORMATION AND DECOMPOSITION OF HIGH-MASS METAL-OXYGEN CLUSTER IONS IN THE FAST-ATOM-BOMBARDMENT OF LANTHANIDE SALTS. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS (5). pp. 875-884. ISSN 0300-9246.
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Abstract
Fast atom bombardment of lanthanide nitrates in involatile organic:matrices gave rise to series of lanthanide-oxygen cluster monocations of general formula [(LnO)(x)O-y](+) containing up to 40 metal atoms, e.g. [(LaO)(33)O-19](+). [(HoO)(27)O-14](+) and [(PrO)(41)O-20](+). The behaviour within each series depends on the metal atom, but odd-even alternation effects in the ion abundances are universal, with some even-x members missing altogether. The stoichiometry of the clusters also depends on the metal atom, with virtually all series displaying regions of particular stoichiometry, the ratio y:x increasing sharply at particular x values. These well defined regions are particularly numerous for lanthanides (Eu and Sm) featuring two relatively stable oxidation states. There a Iso appear to be certain 'islands of stability' where a particular value of x is associated with exceptional stability. Collision-induced decomposition studies of a variety of the cluster ions revealed loss of LnO, LnO(2) or Ln(2)O(3) moieties, with relative abundances of daughter ions dependent on the pressure of the collision gas; odd-even alternation effects were again observed. Consideration of the detailed stoichiometry of the cluster ions suggests remarkable parallels with the phase behaviour of the lanthanide oxides in the solid state.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | ||||
Publisher: | ROYAL SOC CHEMISTRY | ||||
ISSN: | 0300-9246 | ||||
Official Date: | 7 March 1995 | ||||
Dates: |
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Number: | 5 | ||||
Number of Pages: | 10 | ||||
Page Range: | pp. 875-884 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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