The Effect of Nonferrous Metals on the Extraction of Ruthenium(II) Nitrosonitro Species from Nitrate Solutions with Tributyl Phosphate
Russian Journal of Inorganic Chemistry
, E-ISSN: 1531-8613
Boreskov Institute of Catalysis SB RAS
Nikolaev Institute of Inorganic Chemistry SB RAS
An NMR study of differently charged ruthenium(II) nitrosonitro species in solutions was performed, and their reactivity to nonferrous metals was examined in the course of extraction with tributyl phosphate (TBP). A strong synergetic effect due to the fori-nation of heterometallic Ru-M complexes was found for the most stable [RuNO(NO2)(4)OH](2-) species. The stoichiometry and extraction constants of these complexes were deter-mined: their extraction constants agree with the Irving-Williams series (Cu2+ greater than or equal to Zn2+ > Co2+, > Ni2+).