Formation of mononuclear rhodium(III) sulfates: 103Rh and 17O NMR study

被引：1
|
作者：
Belyaev, A. V. [1 ]
Fedotov, M. A. [2 ]
Vorob'eva, S. N. [1 ]
机构：
[1] Russian Acad Sci, Inst Inorgan Chem, Siberian Div, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Div, Novosibirsk 630090, Russia
来源：
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY | 2009年 / 35卷 / 08期
关键词：
COMPLEXES; RH;
D O I：
10.1134/S1070328409080041
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
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 Rh-103 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) a parts per thousand 8, K (2trans) a parts per thousand 1, K (2cis) a parts per thousand 1, and K (3) a parts per thousand 2.
引用
收藏
页码：577 / 581
页数：5
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