Complexation of the [Rh(H2O)(6)](3+) Ion with Phosphoric Acid as Probed by P-31 NMR Full article
Journal |
Russian Journal of Inorganic Chemistry
ISSN: 0036-0236 , E-ISSN: 1531-8613 |
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Output data | Year: 2014, Volume: 59, Number: 5, Pages: 503-507 Pages count : 5 DOI: 10.1134/S0036023614050027 | ||||
Tags | Rhodium; Acid Dissociation Constant; Phosphate Complex; Phosphate Ligand; Intensity Ratio Change | ||||
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Abstract:
The kinetics of the reaction [Rh(H2O)6]3+ + H3PO4 ↔ [Rh(H2O)5H2PO4]2+ + H3O+ has been studied by 31P NMR; E a = 142 ± 12 kJ/mol, logA = 17 ± 2. An empirical dependence of the 31P NMR chemical shift on the equilibrium pH value has been found. The acid dissociation constant of the coordinated ion has been evaluated: pK = 1.5. The 31P NMR chemical shifts of individual [Rh(H2O)5H2PO4]2+ and [Rh(H2O)5HPO4]+ complex ions are, respectively, 14.5 and 15.8 ppm at 323 K.
Cite:
Belyaev A.V.
, Vorobʹyova S.N.
, Fedotov M.A.
, Kompanʹkov N.B.
Complexation of the [Rh(H2O)(6)](3+) Ion with Phosphoric Acid as Probed by P-31 NMR
Russian Journal of Inorganic Chemistry. 2014. V.59. N5. P.503-507. DOI: 10.1134/S0036023614050027 WOS Scopus РИНЦ
Complexation of the [Rh(H2O)(6)](3+) Ion with Phosphoric Acid as Probed by P-31 NMR
Russian Journal of Inorganic Chemistry. 2014. V.59. N5. P.503-507. DOI: 10.1134/S0036023614050027 WOS Scopus РИНЦ
Original:
Беляев А.В.
, Воробьёва С.Н.
, Федотов М.А.
, Компаньков Н.Б.
Комплексообразование иона [RH(H2O)6]3+ с фосфорной кислотой по данным ЯМР 31
Журнал неорганической химии. 2014. Т.59. №5. С.673-677. DOI: 10.7868/S0044457X14050031 РИНЦ
Комплексообразование иона [RH(H2O)6]3+ с фосфорной кислотой по данным ЯМР 31
Журнал неорганической химии. 2014. Т.59. №5. С.673-677. DOI: 10.7868/S0044457X14050031 РИНЦ
Dates:
Submitted: | Apr 17, 2012 |
Published print: | May 1, 2014 |
Published online: | May 25, 2014 |
Identifiers:
Web of science | WOS:000336402700015 |
Scopus | 2-s2.0-84903138146 |
Elibrary | 24061353 |
Chemical Abstracts | 2014:853224 |
OpenAlex | W2031835219 |