Matrix isolation studies and DFT calculations on molecular alkali metal bromates

DFT and MP2 calculations have been carried out on a series of molecular alkali metal bromates MBrO3 (M = Na, K, Rb, Cs), and the results compared with matrix isolation IR studies on the vaporisation of the solid salts. For M = Na, K or Rb, no ternary molecular species were detected in the low temper...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2009-01, Vol.11 (4), p.650-654
Main Authors: OGDEN, J. Steven, GRAHAM, John T, JOY, Jon T, FERRANTE, Francesco
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
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Summary:DFT and MP2 calculations have been carried out on a series of molecular alkali metal bromates MBrO3 (M = Na, K, Rb, Cs), and the results compared with matrix isolation IR studies on the vaporisation of the solid salts. For M = Na, K or Rb, no ternary molecular species were detected in the low temperature matrix, but vaporisation of solid caesium bromate at 730 K resulted in the formation of molecular CsBrO3, which was identified as having a C3v structure involving tridentate coordination. Additionally, the DFT and MP2 calculations provide estimates of the molecular parameters for all four MBrO3 species, and for the related MXO3 species CsClO3 and CsIO3. The proven stability of MBrO3 molecules may have a bearing on the atmospheric chemistry of bromine oxo-species.
ISSN:1463-9076
1463-9084
DOI:10.1039/b813021c