in water H4EDTA, FeCl3 and H2O heated to 60°C with stirring under N2, after full dissolution proper carbonate added; filtered, redissolved in H2O. membrane dialysis, solid washed (acetone),dried (20 mTorr, 12 h); mass spect., TGA;

in water H4EDTA, Fe(NO3)3 and H2O heated to 60°C with stirring under N2, after full dissolution proper carbonate added; filtered, redissolved in H2O. membrane dialysis, solid washed (acetone),dried (20 mTorr, 12 h); mass spect., TGA;