State of Silicotungstic Acid in Aqueous Solutions in the Presence of Inorganic Salts as Probed by NMR Spectroscopy

• Published in: Russian journal of inorganic chemistry Vol. 63; no. 8; pp. 1097 - 1099
• Main Authors: Sulimov, A. V., Balashov, A. L., Ovcharova, A. V., Ryabova, T. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-08-2018; Springer Nature B.V
• Subjects: Aqueous solutions; Chemistry; Chemistry and Materials Science; Complex formation; Inorganic Chemistry; Inorganic salts; Iron sulfates; NMR spectroscopy; Physical Chemistry of Solutions; Spectrum analysis
• ISSN: 0036-0236; 1531-8613
• DOI: 10.1134/S0036023618080223

The state of silicotungstic acid (STA) in the presence of inorganic salts (Fe
2
(SO
4
)
3
, SnCl
2
, and SnSO
4
) in aqueous solutions was studied by
183
W NMR spectroscopy. Silicotungstic acid was found to retain its structure, and no new heteropoly compounds were formed. This finding proves the enhanced stability of STA toward complex formation at high acidities.