Abstract
THE structures and formulæ of the heteropoly acids have long been a subject for speculation. In 1929, Pauling1, on theoretical grounds, proposed a structure for the molecules of the 12-heteropoly acids, which gave the formula of 12-phosphotungstic acid as H3[PO4.W12O18(OH)36]nH2O.
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References
Pauling, L., J. Amer. Chem. Soc., 2, 51, 2868 ; 1929.
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KEGGIN, J. Structure of the Molecule of 12-Phosphotungstic Acid. Nature 131, 908–909 (1933). https://doi.org/10.1038/131908b0
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DOI: https://doi.org/10.1038/131908b0
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