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2-Aminoanilinium phosphite.

Abdallah Khaoulana Idrissi1, Mohamed Saadi, Mohamed Rafiq

  • 1Laboratoire des Matériaux et Protection de l'Environnement, Faculté des Sciences, Fes, Morocco.

Acta Crystallographica. Section C, Crystal Structure Communications
|October 3, 2002
PubMed
Summary
This summary is machine-generated.

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The solid-state structure of 2-aminoanilinium hydrogen phosphonate reveals a unique hydrogen bonding network. Unlike previous findings, this study found no inter-phosphite hydrogen bonding in the crystal structure.

Area of Science:

  • Solid-state chemistry
  • Crystallography
  • Hydrogen bonding

Background:

  • The compound 2-aminoanilinium hydrogen phosphonate (C(6)H(9)N(2)(+).H(2)PO(3)(-)) has been previously studied for its solid-state properties.
  • Previous research indicated the presence of inter-phosphite hydrogen bonding in related structures.

Purpose of the Study:

  • To elucidate the precise solid-state structure of 2-aminoanilinium hydrogen phosphonate.
  • To clarify the hydrogen bonding interactions within the crystal lattice.
  • To resolve discrepancies with previous structural observations.

Main Methods:

  • Single-crystal X-ray diffraction analysis was employed to determine the molecular and crystal structure.
  • Detailed analysis of intermolecular interactions, specifically hydrogen bonds, was performed.

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Main Results:

  • The crystal structure confirmed the presence of monoprotonated diamine molecules.
  • Multiple hydrogen bonds were observed between the 2-aminoanilinium cations and hydrogen phosphonate anions.
  • Crucially, no inter-phosphite hydrogen bonding was detected in the determined structure.

Conclusions:

  • The solid-state structure of 2-aminoanilinium hydrogen phosphonate features extensive cation-anion hydrogen bonding.
  • The absence of inter-phosphite hydrogen bonding in this specific compound contrasts with prior observations.
  • This study provides a definitive structural characterization, refining our understanding of phosphonate-based crystal engineering.