O-17 and Rh-103 NMR study of rhodium(III) aquo and aquo-sulfato complexes in aqueous and sulfate media

Authors
Fedotov, MA Shipachev, VA Levchenko, LM
Citation
Ma. Fedotov et al., O-17 and Rh-103 NMR study of rhodium(III) aquo and aquo-sulfato complexes in aqueous and sulfate media, RUSS J C CH, 25(1), 1999, pp. 31-35
Citations number
16
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY
ISSN journal
10703284 → ACNP
Volume
25
Issue
1
Year of publication
1999
Pages
31 - 35
Database
ISI
SICI code
1070-3284(199901)25:1<31:OARNSO>2.0.ZU;2-E
Abstract
Solutions of Rh(III) aquo complexes obtained by different methods were stud ied by the Rh-103 and O-17 NMR methods. In combination with the electronic absorption spectra of these solutions, their Rh-103 and O-17 NMR spectra in dicate the presence of an admixture of polynuclear complexes, which increas es upon concentration. It is shown that, in the presence of H2SO4, polymeri zation reactions occur in parallel with the substitution of HSO4- ions for the water molecules in the Rh(III) aquo ion; the number of coordinated wate r molecules regularly decreases as SO42- is added.