Formation of Mononuclear Rhodium(III) Sulfates: 103Rh and 17O NMR Study
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Russian Journal of Coordination Chemistry
ISSN: 1070-3284
, E-ISSN: 1608-3318
|
| Output data |
Year: 2009,
Volume: 35,
Number: 8,
Pages: 577-581
Pages count
: 5
DOI:
10.1134/S1070328409080041
|
| Authors |
Belyaev A.V.
1
,
Fedotov M.A.
2
,
Vorobʹeva S.N.
1
|
| Affiliations |
| 1 |
Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
|
| 2 |
Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, pr. akademika Lavrent’eva 5, Novosibirsk, 630090 Russia
|
|
It was shown that the monomeric rhodium sulfate complexes [Rh(H2O)4(SO4)]+, trans-[Rh(H2O)2(SO4)2]−, cis-[Rh(H2O)2(SO4)2]−, and [Rh(SO4)3]3− were not predominant forms in aqueous solutions. The 103Rh NMR chemical shifts of the complexes were assigned, and the conditions for their formation in solutions, concentration parameters, and acidity at which the fraction of the monomers was maximal were determined. The constants of formation of the complexes and ion pair (IP) were estimated: K IP = 8 ± 3.5, K 1 ≈ 8, K 2trans ≈ 1, K 2cis ≈ 1, and K 3 ≈ 2.