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Abstract <p>Crystals of a new double complex salt K[Co(NH<sub>3</sub>)<sub>6</sub>][Cr<sub>2</sub>(C<sub>3</sub>H<sub>2</sub>O<sub>4</sub>)<sub>4</sub>(OH)<sub>2</sub>]Cl·5.33H<sub>2</sub>O (<b>1</b>) are prepared for first time by the isothermal evaporation of an aqueous solution containing hexammine cobalt(III) chloride, chromium(III) nitrate, and potassium malonate. The new compound crystallizes in the monoclinic crystal system, <i>C</i>2/<i>c</i> space group, <i>a</i>&#xa0;=&#xa0;13.6657(3)&#xa0;Å, <i>b</i>&#xa0;=&#xa0;15.2499(3)&#xa0;Å, <i>c</i>&#xa0;=&#xa0;15.8264(7)&#xa0;Å, β&#xa0;=&#xa0;114.285(3)°, <i>V</i>&#xa0;=&#xa0;3006.37(2)&#xa0;Å<sup>3</sup>. The crystal structure of the new compound contains a relatively rare [Cr<sub>2</sub>(C<sub>2</sub>H<sub>3</sub>O<sub>4</sub>)<sub>4</sub>](OH)<sub>2</sub>]<sup>4–</sup> dinuclear anion.</p>

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Synthesis and Crystal Structure of a New Double Complex Salt K[Co(NH3)6][Cr2(C3H2O4)4(OH)2]·5.33H2O

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • V. E. Kireev,
  • D. O. Charkin,
  • A. M. Gorianskii,
  • A. A. Kompanchenko,
  • A. N. Gosteva,
  • S. M. Aksenov

摘要

Abstract

Crystals of a new double complex salt K[Co(NH3)6][Cr2(C3H2O4)4(OH)2]Cl·5.33H2O (1) are prepared for first time by the isothermal evaporation of an aqueous solution containing hexammine cobalt(III) chloride, chromium(III) nitrate, and potassium malonate. The new compound crystallizes in the monoclinic crystal system, C2/c space group, a = 13.6657(3) Å, b = 15.2499(3) Å, c = 15.8264(7) Å, β = 114.285(3)°, V = 3006.37(2) Å3. The crystal structure of the new compound contains a relatively rare [Cr2(C2H3O4)4](OH)2]4– dinuclear anion.