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<p>Formation of guanidinium and 4-aminoguanidinium cations with 18-crown-6 ether was observed upon interaction of the respective thiosulfates and crown ether. The new compounds [(CN<sub>3</sub>H<sub>6</sub>)<sub>2</sub>(C<sub>12</sub>H<sub>24</sub>O<sub>6</sub>)][(CN<sub>3</sub>H<sub>6</sub>)<sub>2</sub>(C<sub>12</sub>H<sub>24</sub>O<sub>6</sub>)(H<sub>2</sub>O)<sub>2</sub>](S<sub>2</sub>O<sub>3</sub>)<sub>2</sub> (<b>1</b>) and [(CN<sub>4</sub>H<sub>7</sub>)<sub>2</sub>(C<sub>12</sub>H<sub>24</sub>O<sub>6</sub>)]<sub>2</sub>(S<sub>2</sub>O<sub>3</sub>) (<b>2</b>), have been characterized by single-crystal and powder diffraction, IR and Raman spectroscopy, and topological analysis. The unit cell parameters are: <i>a</i> = 7.78660(1) Å, <i>b</i> = 9.9999(2) Å, <i>c</i> = 16.7675(3) Å, α = 97.9586(2)°, β = 96.4350(2)°, γ = 99.3458(2)°, space group <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\:P\stackrel{-}{1}\)</EquationSource> </InlineEquation> for 1 and <i>a</i> = 10.0887(2) Å, <i>b</i> = 17.9587(3) Å, <i>c</i> = 14.1896(3) Å, β = 103.5963(2)°, γ = 99.3458(2)°, space group <i>P</i>2<sub>1</sub>/<i>c</i> for <b>2</b>. The structures can be referred to as complex hydrogen-bonded 3D networks. In both structures, the crown ether ligands coordinate two (amino)guanidinium cations; in <b>1</b>, the crown ether molecules and guanidinium cations exhibit two different environments. The size and shape complementarity between the relatively small thiosulfate anions and the cationic complexes is also a critical factor: with the smaller guanidinium cation, the resulting void space is occupied by water molecules, which provide additional stabilization. In contrast, the structure containing the larger aminoguanidinium cation is anhydrous.</p>

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Hydrogen-bonded supramolecular assemblies of novel 18-crown-6 with guanidinium and aminoguanidinium thiosulfates: synthesis, crystal structures, spectroscopic characterization, and topological features

  • 期刊论文

  • 发表日期：

    2026年7月27日

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  • Semyon A. Ivanov,
  • Dmitri O. Charkin,
  • Vadim E. Kireev,
  • Alena A. Kompanchenko,
  • Alevtina N. Gosteva,
  • Alexander M. Banaru,
  • Sergey M. Aksenov

摘要

Formation of guanidinium and 4-aminoguanidinium cations with 18-crown-6 ether was observed upon interaction of the respective thiosulfates and crown ether. The new compounds [(CN3H6)2(C12H24O6)][(CN3H6)2(C12H24O6)(H2O)2](S2O3)2 (1) and [(CN4H7)2(C12H24O6)]2(S2O3) (2), have been characterized by single-crystal and powder diffraction, IR and Raman spectroscopy, and topological analysis. The unit cell parameters are: a = 7.78660(1) Å, b = 9.9999(2) Å, c = 16.7675(3) Å, α = 97.9586(2)°, β = 96.4350(2)°, γ = 99.3458(2)°, space group \(\:P\stackrel{-}{1}\) for 1 and a = 10.0887(2) Å, b = 17.9587(3) Å, c = 14.1896(3) Å, β = 103.5963(2)°, γ = 99.3458(2)°, space group P21/c for 2. The structures can be referred to as complex hydrogen-bonded 3D networks. In both structures, the crown ether ligands coordinate two (amino)guanidinium cations; in 1, the crown ether molecules and guanidinium cations exhibit two different environments. The size and shape complementarity between the relatively small thiosulfate anions and the cationic complexes is also a critical factor: with the smaller guanidinium cation, the resulting void space is occupied by water molecules, which provide additional stabilization. In contrast, the structure containing the larger aminoguanidinium cation is anhydrous.