Studies of the chemistry of the [Ru(H{sub 2}O)Cl{sub 5}]{sup 2{minus}} form of ruthenium(III) in acetic acid solutions
Journal Article
·
· Russian Journal of Coordination Chemistry
OSTI ID:88733
- Lomonov State Academy of Fine Chemical Technology, Moscow (Russian Federation)
- Vernadskii Institute of Geochemistry and Analytical Chemistry, Moscow (Russian Federation)
The behavior of the [Ru(H{sub 2}O)Cl{sub 5}]{sup 2{minus}} form of ruthenium(III) in acetic acid solutions is studied for the first time. It is established that, when the solution of the title complex is allowed to stand in 8.5 M CH{sub 3}COOH at 50{degrees}C, it first hydrates with simultaneous substitution of the acetate ions for the water molecules to form the [Ru(H{sub 2}O)Cl{sub 4}(CH{sub 3}COO)]{sup 2{minus}} and/or [RuCl{sub 4}(CH{sub 3}COO){sub 2}]{sup 3{minus}} complexes in addition to [Ru(H{sub 2}O){sub 2}Cl{sub 4}]{sup {minus}}. The two former complexes yield EPR signals with 2.68 and 2.52 g-factors, respectively. It is noted that EPR spectra with g = 2.31, 2.21, 2.09, and 2.05 can belong both to the mono- and polynuclear ruthenium(III) compounds that are formed in reaction of the parent complex with acetic acid. Experimental evidence favoring both currently suggested concepts is presented.
- OSTI ID:
- 88733
- Journal Information:
- Russian Journal of Coordination Chemistry, Journal Name: Russian Journal of Coordination Chemistry Journal Issue: 3 Vol. 21; ISSN RJCCEY
- Country of Publication:
- United States
- Language:
- English
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