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Pyridoxinium picrate.

K Anitha1, S Athimoolam, S Natarajan

  • 1Department of Physics, Madurai Kamaraj University, Madurai 625021, India. xrdsopmku@yahoo.com

Acta Crystallographica. Section C, Crystal Structure Communications
|July 11, 2006
PubMed
Summary
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This study details the crystal structure of a pyridoxine and picric acid complex. Researchers observed specific molecular arrangements and bonding within the compound, providing insights into its chemical nature.

Area of Science:

  • Crystallography
  • Chemical Physics
  • Molecular Chemistry

Background:

  • Pyridoxine (Vitamin B6) is essential for various biological processes.
  • Picric acid is a strong organic acid with explosive properties.
  • Complex formation between organic molecules can alter their physical and chemical characteristics.

Purpose of the Study:

  • To elucidate the crystal structure of the complex formed between pyridoxine and picric acid.
  • To investigate the molecular interactions and bonding within the pyridoxine-picric acid complex.
  • To characterize the packing arrangement of molecules in the crystal lattice.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the crystal structure.
  • Analysis of bond lengths, bond angles, and intermolecular interactions.

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  • Examination of the unit cell contents and molecular packing.

    • Main Results:

    • The asymmetric unit contains one pyridoxinium cation and one picrate anion.
    • A dihedral angle of 83.19(7) degrees was measured between the aromatic rings of the cation and anion.
    • An intramolecular hydrogen bond was identified within the pyridoxinium cation.
    • Hydrophobic and hydrophilic layers were observed in the crystal packing.

    Conclusions:

    • The study provides a detailed structural description of the pyridoxine-picric acid complex.
    • The observed intramolecular hydrogen bond influences the cation's conformation.
    • The layered packing suggests specific intermolecular forces governing the crystal structure.