Photochemical studies of the alkylammoniun molybdates. Part 5. Photolysis in weak acid solutions
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 2,p. 628-634
- https://doi.org/10.1039/dt9810000628
Abstract
Solution photolysis of hexakis(isopropylammonium) heptamolybdate(VI) trihydrate, [NH3Pri]6[Mo7O24]·3H2O (1), at pH 5.4 leads to reduction to MoV with involvement of hydroxy-radicals, followed by decomposition to yellow and blue species. Propylene and acetone were detected as oxidation products but quantum yields for their formation were much lower than that for MoV formation. The irradiated single-crystal e.s.r. spectra revealed the formation of MoVO5(OH) in a MoO6 octahedral site, which corresponded to the primary event in the solution photolysis. E.s.r. and Raman spectroscopy and flash photolysis were employed to elucidate the mechanism of these reactions.Keywords
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