The state of ruthenium in nitrite-nitrate nitric acid solutions as probed by NMR

被引：0
|
作者：
V. A. Emel’yanov
M. A. Fedotov
机构：
[1] Russian Academy of Sciences,Nikolaev Institute of Inorganic Chemistry, Siberian Division
[2] Russian Academy of Sciences,Boreskov Institute of Catalysis, Siberian Division
来源：
Russian Journal of Inorganic Chemistry | 2006年 / 51卷
关键词：
Nitrite; Ruthenium; Coord; Nitric Acid Solution; Sodium Nitrite;
D O I：
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中图分类号：
学科分类号：
摘要：
The state of ruthenium in nitric acid solutions treated with sodium nitrite has been studied by 14N, 15N, 17O, and 99Ru NMR. In the acidity range 2.7-0.12 mol/L, the dominating ruthenium species are the [RuNO(NO2)2(NO3)(H2O)2]0 and [RuNO(NO2)2(H2O)3]+ complexes. When the acidity is decreased to 0.06 mol/L, trinitro-and tetranitronitrosoruthenium(II) complexes predominate in solution. In an acidic medium, the trinitro-and tetranitronitrosoruthenium(II) complexes exhibit catalytic activity toward oxidation with air of nitrite to nitrate.
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页码：1811 / 1819
页数：8
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