Analytical characterization of some pyrazolones and their copolymers with some vinyl compounds.
Some new pyrazolones have been synthesized and their copolymers with styrene, methylmethacrylate and methacrylic acid prepared. The pyrazolones and their styrene and methylmethacrylate copolymers are insoluble in water but form chelate complexes with some alkaline-earth and transition metal ions. The water-soluble methacrylic acid copolymers do not form complexes with these elements, however, probably because of hydrogen-bonding of the chelating groups to the methacrylic acid carboxyl groups. Special attention was paid to the complexation of Au(III), which was assumed to proceed mainly through the nitrogen atoms of the pyrazolone ring.
Ivanova
E
E
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, BG-1040 Sofia, Bulgaria.
Todorova
O
O
Terebenina
A
A
Jordanov
N
N
Borisov
G
G