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Bis(melaminium) sulfate dihydrate.

J Janczak1, G J Perpétuo

  • 1Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, CEP 31270-901 Belo Horizonte - MG, Brazil. jjanek@dedalus.lcc.ufmg.br

Acta Crystallographica. Section C, Crystal Structure Communications
|December 12, 2001
PubMed
Summary

This study details the crystal structure of a new melaminium salt, bis(2,4,6-triamino-1,3,5-triazin-1-ium) sulfate dihydrate. The research reveals a 3D network formed by melaminium, sulfate, and water via hydrogen bonds.

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Acta crystallographica. Section C, Crystal structure communications·2001

Area of Science:

  • Crystallography
  • Materials Science
  • Supramolecular Chemistry

Background:

  • Melaminium salts are nitrogen-rich compounds with potential applications in various fields.
  • Understanding the crystal structure of novel salts is crucial for predicting their properties.
  • Hydrogen bonding plays a key role in the self-assembly of crystalline materials.

Purpose of the Study:

  • To characterize the crystal structure of a newly synthesized melaminium salt.
  • To elucidate the role of hydrogen bonding in the formation of the crystal network.
  • To investigate the coordination environment of the sulfate anion within the crystal lattice.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.

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  • Analysis of bond lengths, angles, and intermolecular interactions (hydrogen bonds) was performed.
  • Geometric analysis of the sulfate anion's coordination sphere.
  • Main Results:

    • The crystal structure of bis(2,4,6-triamino-1,3,5-triazin-1-ium) sulfate dihydrate was successfully determined.
    • The structure consists of monoprotonated melaminium cations, sulfate anions, and water molecules.
    • A three-dimensional network is formed through extensive N-H···N and N-H···O hydrogen bonds between melaminium residues, sulfate ions, and water molecules.

    Conclusions:

    • The melaminium residues form 1D chains linked by N-H···N hydrogen bonds.
    • These chains are further interconnected by sulfate anions and water molecules, creating a robust 3D supramolecular network.
    • The study provides fundamental insights into the crystal engineering of melaminium-based materials.