Precipitation and extraction of some bivalent metal ions with bis(diphenylphosphinyl)methane and perchlorate.
The solvent extraction of alkaline-earth and some bivalent transition metal ions such as Co(2+), Ni(2+), Cu(2+), Zn(2+) and Cd(2+) with the bidentate phosphine oxide compound, bis(diphenylphosphinyl)-methane (BDPPM), and perchlorate into 1,2-dichloroethane has been investigated. When benzene is used as the solvent, the complexes consisting of metal ion, BDPPM and perchlorate are not extracted but are precipitated at the liquid-liquid interface. The precipitates have been isolated and their compositions determined.
Umetani
S
S
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611, Japan.
Shigemura
N
N
Kihara
S
S
Matsui
M
M