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Potassium cobaltinitrite

Russian Journal of Inorganic Chemistry volume 56, pages 501–505 (2011)Cite this article

Abstract

Potassium cobaltinitrite K3[Co(NO2)6] has been synthesized by three methods. The crystalline products have been characterized by scanning electron microscopy, X-ray powder diffraction, IR spectros-copy, and thermal and sedimentation analyses. A comparative analysis of the synthetic methods has been carried out. The highest yield, the smallest particle size, and the highest purity of the product are attained by reacting potassium nitrite with cobalt nitrate in an acid medium in the same way as in the synthesis of sodium cobaltinitrite: 2CH3COOH + Co(NO3)2 + 7KNO2 → K3[Co(NO2)6]↓ + 2KNO3 + 2CH3COOK + NO↑ + H2O. All of the resulting potassium cobaltinitrite samples are hygroscopic. The water release and nitrite ion elimination temperature intervals have been determined.

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Authors and Affiliations

  1. Institute of Chemical Reagents and Special-Purity Substances, Bogorodskii val 3, Moscow, 107079, Russia

    A. G. Vendilo, N. E. Kovaleva, V. I. Chistov & V. M. Retivov

  2. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    V. M. Retivov

Authors
  1. A. G. Vendilo
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  2. N. E. Kovaleva
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  3. V. I. Chistov
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  4. V. M. Retivov
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Corresponding author

Correspondence to V. I. Chistov.

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Original Russian Text © A.G. Vendilo, N.E. Kovaleva, V.I. Chistov, V.M. Retivov, 2011, published in Zhurnal Neorganicheskoi Khimii, 2011, Vol. 56, No. 4, pp. 541–545.

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Vendilo, A.G., Kovaleva, N.E., Chistov, V.I. et al. Potassium cobaltinitrite. Russ. J. Inorg. Chem. 56, 501–505 (2011). https://doi.org/10.1134/S0036023611040267

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  • DOI: https://doi.org/10.1134/S0036023611040267

Keywords

  • Sodium Nitrite
  • Cobalt Nitrate
  • Xylenol Orange
  • Sedimentation Analysis
  • Cobalt Hydroxide