Intercalation compounds of (diphosphato)oxotungsten(VI), [WO(P2O7)]
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 3,p. 609-612
- https://doi.org/10.1039/dt9870000609
Abstract
Reduction of [WO(P2O7)] in aqueous solution with strong reducing agents results in the uptake of cations and water molecules in the interalayer spaces and expansion of the basal spacing. The product NaxWO(P2O7)·nH2O (0.80 ⩽x⩽ 1.41) was produced with Na2S2O4 solution. At x > 1.1 a hydrated phase with a basal spacing of 10.8 Å and n= 1.0 was obtained, and at x < 1.1 three hydrated states with basal spacings of 11.5, 10.8, and 10.4 Å were found, depending on the humidity. The basal spacing of the unhydrated phase is 9.5 Å at any value of x. Upon reduction with acidified SnCl2 solution, Sn2+ and H+ were taken up into the interlayer spaces to form Sn2+ xHyWO(P2O7)·nH2O with a basal spacing of 12.2 Å. The sum (2x+y) ranged from 0.46 to 0.80.Keywords
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