Applications of High Frequency Chemical Analysis to the Studies of Metallic Complex Salts. II
Formation of Metallic Complex Salts of Pyridine, Hexamine, Ethylenediamine, and α, α′-Bipyridyl
1951 年 71 巻 10 号 p. 1128-1133
詳細
1951 年 71 巻 10 号 p. 1128-1133
By means of the high frequency titration, the formation of metallic complex salts of pyridine, hexamine, ethylenediamine and α, α′-bipyridyl was studied. The results are as follows:
1) In the pyridine complex salts of copper, nickel or zinc, the breaking points in the titration curve are approximately at 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, and 1:1.5 and 1:3 for that of calcium, and 1:2, 1:3, 1:4 and 1:5 for that of lithium.
2) The curves for hexamine complex salts of nickel, copper or zinc have the breaking points approximately at 1:0.5, 1:1, 1:2 and 1:3.
3) The titration curves for ethylenediamine complex salts of copper, nickel or cadmium are complicated, not showing good reproducibility. However, the breaking points are approximately at 1:1, (1:1.5), 1:2, (1:2.5), 1:3 and (1:5).
4) The titration curves for α, α′-bipyridyl complex of nikel, copper, zinc, iron or manganese have the breaking points approximately at 1:1, 1:2 and 1:3. However, the titration curve for complex salts of iron and manganese, the breaking point 1:1.4 is marked unless it is extrapolated.
