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Abstract <p>The double complex salt [Rh(NH<sub>3</sub>)<sub>6</sub>][Fe(CN)<sub>6</sub>] has been structurally characterized. The thermal behavior of salt [Rh(NH<sub>3</sub>)<sub>6</sub>][Fe(CN)<sub>6</sub>] in reducing (He/H<sub>2</sub>), inert (He), and oxidizing (Ar/O<sub>2</sub>) atmospheres has been studied in detail. The intermediate product of the decomposition of double complex salts [M(NH<sub>3</sub>)<sub>6</sub>][Fe(CN)<sub>6</sub>] (M = Ir, Rh) has been found to be an X-ray amorphous polymer compound with the gross composition FeM(CN)<sub>5</sub>. The final product of the decomposition of [Rh(NH<sub>3</sub>)<sub>6</sub>][Fe(CN)<sub>6</sub>] in reducing and inert atmospheres is an ordered FeRh alloy. In an oxidizing atmosphere, a solid solution of Fe<sub>2</sub>O<sub>3</sub> and Rh<sub>2</sub>O<sub>3</sub> oxides is predominantly formed. The obtained data allow us to consider double complex salts as precursors for obtaining iron-iridium and iron-rhodium alloys or oxide systems based on them.</p>

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Thermal Decomposition of [M(NH3)6][Fe(CN)6] (M = Ir, Rh) in Different Atmospheres. Crystal Structure of [Rh(NH3)6][Fe(CN)6]

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • A. A. Popov,
  • P. E. Plyusnin,
  • P. Yu. Tyapkin,
  • T. S. Sukhikh,
  • L. S. Kibis,
  • S. V. Korenev

摘要

Abstract

The double complex salt [Rh(NH3)6][Fe(CN)6] has been structurally characterized. The thermal behavior of salt [Rh(NH3)6][Fe(CN)6] in reducing (He/H2), inert (He), and oxidizing (Ar/O2) atmospheres has been studied in detail. The intermediate product of the decomposition of double complex salts [M(NH3)6][Fe(CN)6] (M = Ir, Rh) has been found to be an X-ray amorphous polymer compound with the gross composition FeM(CN)5. The final product of the decomposition of [Rh(NH3)6][Fe(CN)6] in reducing and inert atmospheres is an ordered FeRh alloy. In an oxidizing atmosphere, a solid solution of Fe2O3 and Rh2O3 oxides is predominantly formed. The obtained data allow us to consider double complex salts as precursors for obtaining iron-iridium and iron-rhodium alloys or oxide systems based on them.