Possibilities of Multinuclear NMR in Determination of Acidity of Heteropoly Acid Solutions Full article
Journal |
Russian Journal of Inorganic Chemistry
ISSN: 0036-0236 , E-ISSN: 1531-8613 |
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Output data | Year: 2002, Volume: 47, Number: 12, Pages: 1867-1873 Pages count : 7 | ||
Tags | acid; anion; carbon; nitrogen; oxygen 17; solvent | ||
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Abstract:
The N-14 and C-13 NMR parameters of the acidity indicator ortho-nitroaniline (o-NA) and the N-14 and O-17 NMR parameters of substrates in solutions of some acids and heteropoly acids (HPA) have been measured. The N-14 and C-13 NMR parameters of Hammet acidity indicators and the N-14 and O-17 NMR parameters of anions and a solvent depend on the acidity of a solution. The NMR signals of the amino nitrogen atom and the carbon atom bearing the amino group are most sensitive. Comparison of the NMR parameters of the Hammet indicator o-NA in solutions of acids and HPAs shows that the interaction of HPAs with o-NA, which is not related to acidity, additionally contributes to the NMR parameters of o-NA in HPA solutions. It has been shown that the acidity of a water-containing solution can be estimated based on the O-17 NMR parameters of water.
Cite:
Fedotov M.A.
, Maksimov G.M.
, Ignashin S.V.
Possibilities of Multinuclear NMR in Determination of Acidity of Heteropoly Acid Solutions
Russian Journal of Inorganic Chemistry. 2002. V.47. N12. P.1867-1873. WOS Scopus РИНЦ
Possibilities of Multinuclear NMR in Determination of Acidity of Heteropoly Acid Solutions
Russian Journal of Inorganic Chemistry. 2002. V.47. N12. P.1867-1873. WOS Scopus РИНЦ
Original:
Федотов М.А.
, Максимов Г.М.
, Игнашин С.В.
Возможности ЯМР разных ядер в определении кислотности растворов гетерополикислот
Журнал неорганической химии. 2002. Т.47. №12. С.2031-2037. Scopus РИНЦ
Возможности ЯМР разных ядер в определении кислотности растворов гетерополикислот
Журнал неорганической химии. 2002. Т.47. №12. С.2031-2037. Scopus РИНЦ
Dates:
Published print: | Dec 1, 2002 |
Identifiers:
Web of science | WOS:000180150900018 |
Scopus | 2-s2.0-8744249125 |
Elibrary | 13402927 |