Transient intermediates in the polymerisation of tungstate
- 1 January 1978
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 2,p. 133-137
- https://doi.org/10.1039/dt9780000133
Abstract
The reaction of alkaline solutions of Na2[WO4](ca. 10–3 mol dm–3) with acid has been studied by stopped-flow-spectrophotometric and indicator-spectrophotometric techniques. The formation of ‘acid paratungstate’, [H8W6O24]4–, has been detected. It is the most important of the transient intermediates formed ca. 500 ms after mixing, before decomposition to a mixture of [HW6O21]5– and [(HW6O20)n]3n–. It is confirmed that this ‘acid paratungstate’ exists for some hours in tetramethylammonium chloride solution.Keywords
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