Abstract
Various spectroscopic methods and X-ray phase analysis were applied to study the distribution of copper(II) and lead(II) between the solution and the precipitate of (NH4)2Na[Rh(NO2)6]. Promising methods are proposed for fine purification of ammonium sodium hexanitrites of rhodium(III) and iridium(III) to remove contaminants, irrespective of the mechanism of their ingress into crystalline phases.
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Korenev, S.V., Venediktov, A.B., Nadolinnyi, V.A. et al. Nature of Contamination and Preparation of Pure Precipitates of Rh(III) and Ir(III) Ammonium Sodium Hexanitrites. Russian Journal of Applied Chemistry 74, 7–11 (2001). https://doi.org/10.1023/A:1012758908776
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DOI: https://doi.org/10.1023/A:1012758908776