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Abstract <p>New double complex salts [Co(NH<sub>3</sub>)<sub>5</sub>Cl][Cu(H<sub>2</sub>O)(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>] and [Co(en)<sub>3</sub>]<sub>2</sub>[Cu(H<sub>2</sub>O)(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]<sub>2</sub>[Cu(H<sub>2</sub>O)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]·10H<sub>2</sub>O (en is ethylenediamine) have been prepared and their thermal properties have been studied. The compounds have been characterized by physicochemical methods of analysis (single crystal and powder X-ray diffraction, IR spectroscopy and elemental analysis). It has been found using thermal analysis and powder X-ray diffraction that decomposition of the complex salts leads to formation of metastable Co<sub><i>x</i></sub>Cu<sub>1–<i>x</i></sub> solid solutions with high mutual solubility of metals. Formation of metastable solid solutions in Co–Cu system has been shown.</p>

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Chloropentaammine- and Tris(ethylenediamine)cobalt(III) Oxalatocuprates(II): Synthesis, Crystal Structure, and Thermal Properties

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • V. I. Lagunova,
  • E. Yu. Filatov,
  • P. E. Plyusnin,
  • N. V. Kuratieva,
  • S. V. Korenev

摘要

Abstract

New double complex salts [Co(NH3)5Cl][Cu(H2O)(C2O4)2] and [Co(en)3]2[Cu(H2O)(C2O4)2]2[Cu(H2O)2(C2O4)2]·10H2O (en is ethylenediamine) have been prepared and their thermal properties have been studied. The compounds have been characterized by physicochemical methods of analysis (single crystal and powder X-ray diffraction, IR spectroscopy and elemental analysis). It has been found using thermal analysis and powder X-ray diffraction that decomposition of the complex salts leads to formation of metastable CoxCu1–x solid solutions with high mutual solubility of metals. Formation of metastable solid solutions in Co–Cu system has been shown.