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Related Experiment Videos

Crystal structure prediction for eniluracil.

M Sacchetti1, P G Varlashkin, S T Long

  • 1Glaxo Wellcome Inc., Pharmaceutical Development, 5 Moore Drive, Research Triangle Park, NC 27709, USA. sacchetti.mark@gene.com

Journal of Pharmaceutical Sciences
|September 6, 2001
PubMed
Summary
This summary is machine-generated.

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Molecular modeling predicted the crystal structure of eniluracil, overcoming challenges in single-crystal growth. The P2(1)/c structure was identified as the most accurate representation using advanced computational methods and experimental data.

Area of Science:

  • Crystallography
  • Computational Chemistry
  • Solid-state Chemistry

Background:

  • Determining the crystal structure of eniluracil has been challenging due to difficulties in obtaining single crystals.
  • Accurate crystal structure is crucial for understanding compound properties and interactions.

Purpose of the Study:

  • To predict and determine the crystal structure of eniluracil using computational modeling.
  • To validate predicted structures against experimental spectroscopic and diffraction data.

Main Methods:

  • Utilized advanced molecular modeling tools for crystal structure prediction.
  • Employed two distinct methods: one integrating molecular structure with powder X-ray diffraction (PXRD) data, and another combining molecular structure with lattice energy calculations.

Related Experiment Videos

  • Compared simulated PXRD patterns with experimental data and analyzed infrared (IR) and Raman spectra.

    • Main Results:

    • Successfully predicted two potential crystal structures for eniluracil: one with P2(1)/c symmetry and another with P2(1) symmetry.
    • Both predicted structures were consistent with experimental IR and Raman spectra.
    • Detailed analysis of simulated and experimental PXRD patterns strongly supported the P2(1)/c structure as the most accurate representation.

    Conclusions:

    • The crystal structure of eniluracil was successfully predicted using computational methods.
    • The P2(1)/c crystal structure is identified as the most probable and best-represented form of eniluracil.
    • This study demonstrates the efficacy of molecular modeling in elucidating crystal structures when single-crystal growth is not feasible.