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Abstract <p>The <b>[Pt(NH</b><sub><b>3</b></sub><b>)</b><sub><b>4</b></sub><b>]</b><sub><b>3</b></sub><b>[Ta(C</b><sub><b>2</b></sub><b>O</b><sub><b>4</b></sub><b>)</b><sub><b>4</b></sub><b>]</b><sub><b>2</b></sub><b>·2H</b><sub><b>2</b></sub><b>O (I)</b> and <b>[Rh(NH</b><sub><b>3</b></sub><b>)</b><sub><b>6</b></sub><b>][TaO(C</b><sub><b>2</b></sub><b>O</b><sub><b>4</b></sub><b>)</b><sub><b>3</b></sub><b>]·2.5H</b><sub><b>2</b></sub><b>O (II)</b> double complex salts (DCSs) are prepared and characterized by single crystal XRD, powder XRD, and IR spectroscopy methods. Crystal data for <b>I</b>: <i>P</i>2<sub>1</sub>/<i>c</i> space group, <i>a</i>&#xa0;=&#xa0;7.4894(3)&#xa0;Å, <i>b</i>&#xa0;=&#xa0;17.4414(5)&#xa0;Å, <i>c</i>&#xa0;=&#xa0;15.4949(5)&#xa0;Å, β&#xa0;=&#xa0;92.958(10)°, <i>Z</i>&#xa0;=&#xa0;2. Crystal data for <b>II</b>: <InlineEquation ID="IEq1"> <EquationSource Format="TEX">$P\bar{1}$</EquationSource> </InlineEquation> space group, <i>a</i>&#xa0;=&#xa0;7.8194(2)&#xa0;Å, <i>b</i>&#xa0;=&#xa0;15.5143(5)&#xa0;Å, <i>c</i>&#xa0;=&#xa0;15.8494(5)&#xa0;Å, α&#xa0;=&#xa0;90.991(10)°, β&#xa0;=&#xa0;92.096(10)°, γ&#xa0;=&#xa0;101.549(10)°, <i>Z</i>&#xa0;=&#xa0;2. Oxalic acid tantalum(V) solutions are studied by mass spectrometry; a number of complex forms in such solutions are established. Thermal decomposition processes of <b>I</b> and <b>II</b> in inert and reducing atmospheres are considered.</p>

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Double Complex Salts Based on Complex Tantalum(V) Oxalates: Synthesis, Structure, and Thermal Behavior

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • S. N. Vorobyeva,
  • S. A. Bautina,
  • Z. V. Rudzis,
  • T. S. Sukhikh,
  • Y. V. Rudneva,
  • D. G. Sheven,
  • P. E. Plyusnin,
  • S. V. Korenev

摘要

Abstract

The [Pt(NH3)4]3[Ta(C2O4)4]2·2H2O (I) and [Rh(NH3)6][TaO(C2O4)3]·2.5H2O (II) double complex salts (DCSs) are prepared and characterized by single crystal XRD, powder XRD, and IR spectroscopy methods. Crystal data for I: P21/c space group, a = 7.4894(3) Å, b = 17.4414(5) Å, c = 15.4949(5) Å, β = 92.958(10)°, Z = 2. Crystal data for II: $P\bar{1}$ space group, a = 7.8194(2) Å, b = 15.5143(5) Å, c = 15.8494(5) Å, α = 90.991(10)°, β = 92.096(10)°, γ = 101.549(10)°, Z = 2. Oxalic acid tantalum(V) solutions are studied by mass spectrometry; a number of complex forms in such solutions are established. Thermal decomposition processes of I and II in inert and reducing atmospheres are considered.