Summary
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1.
The polyphenols catechol and pyrogallol, as well as phenolic compounds of more complex composition (d,l-catechin,l-epicatechin, tannin), having hydroxyl groups in the ortho position, form stable complex compounds with germanium over a large range of pH values.
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2.
An x-ray structure study of the complex compounds of germanium with catechol has shown that these compounds have a crystalline structure, and do not contain any admixture of germanium or catechol.
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We should like to use this occasion to express our gratitude to M. N. Zaprometov for supplying us with the catechin samples.
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Drozdova, T.V., Kravtsova, R.P. & Tobelko, K.I. Paper electrophoresis and x-ray structure study of the complex compounds of phenols with germanium. Russ Chem Bull 11, 31–37 (1962). https://doi.org/10.1007/BF00907482
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DOI: https://doi.org/10.1007/BF00907482