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

IF 1.5 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Russian Journal of Inorganic Chemistry Pub Date : 2025-07-09 DOI:10.1134/S0036023624603684

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

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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.

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[M(NH3)6][Fe(CN)6] （M = Ir, Rh）在不同气氛下的热分解。[Rh(NH3)6][Fe(CN)6]的晶体结构

对双络合盐[Rh(NH3)6][Fe(CN)6]进行了结构表征。详细研究了盐[Rh(NH3)6][Fe(CN)6]在还原性（He/H2）、惰性（He）和氧化性（Ar/O2）气氛中的热行为。双络合盐[M(NH3)6][Fe(CN)6] （M = Ir, Rh）分解的中间产物是一种总组成为FeM(CN)5的x射线无定形聚合物化合物。[Rh(NH3)6][Fe(CN)6]在还原气氛和惰性气氛中分解的最终产物是有序的铁合金。在氧化气氛中，主要形成Fe2O3和Rh2O3氧化物的固溶体。所获得的数据使我们可以考虑双络合盐作为获得铁铱和铁铑合金或基于它们的氧化物体系的前体。

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来源期刊

Russian Journal of Inorganic Chemistry 化学-无机化学与核化学

CiteScore

3.10

自引率

38.10%

发文量

237

审稿时长

3 months

期刊介绍： Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.