Abstract
SILVER (I) ion reacts with 8-quinolinol to give a metal chelate having the formula, Ag(C9H6NO)C9H6NOH (ref. 1). Two forms of the chelate are known: (a) a yellow form, prepared at temperatures below 60° C.2; (b) a green form prepared at temperatures above 60° C.2. Nakatsuka2 reported that the green form contained silver in the Ag (II) oxidation state, a deduction based on a bromometric titration procedure. However, it was shown later by Block et al.3 that the green form was diamagnetic and contained silver in the Ag (I) oxidation state. Although both the yellow and green forms were prepared by the latter investigators, the differences between these two forms were not elucidated.
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References
Vis, G. N., J. prakt. Chem., 45, 530 (1892).
Nakatsuka, Y., Bull. Chem. Soc. Jap., 11, 45 (1936).
Block, B. P., Bailar, J. C., and Pearce, D. W., J. Amer. Chem. Soc., 73, 4971 (1951).
Wendlandt, W. W., Anal. Chem., 28, 499 (1956).
Wendlandt, W. W., and Van Tassel, J. H., Science, 127, 242 (1958).
Smith, J. V. (ed.), A.S.T.M. Tables, 571 (1960).
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WENDLANDT, W., HASCHKE, J. Yellow and Green Forms of Silver (I) 8-Quinolinolate. Nature 193, 1174–1175 (1962). https://doi.org/10.1038/1931174a0
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DOI: https://doi.org/10.1038/1931174a0
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