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1,17-Heptadecanediol.

N Nakamura1, K Uno, Y Ogawa

  • 1Department of Applied Chemistry, Faculty of Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan. nakamura@se.ritsumei.ac.jp

Acta Crystallographica. Section C, Crystal Structure Communications
|May 16, 2001
PubMed
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This study reveals a rod-like molecule with unique hydroxyl group conformations, exhibiting a liquid crystal-like rotator phase and smectic A layer formation for enhanced molecular motion.

Area of Science:

  • Materials Science
  • Crystallography
  • Physical Chemistry

Background:

  • Understanding molecular conformation and phase behavior is crucial for designing novel materials.
  • Long-chain organic molecules with functional groups can exhibit complex phase transitions.
  • Liquid crystals display properties between conventional liquids and solid crystals.

Purpose of the Study:

  • To investigate the molecular structure and phase behavior of a specific C(17)H(36)O(2) compound.
  • To characterize the conformation of hydroxyl groups and their influence on molecular packing.
  • To explore the potential for liquid crystalline properties in this organic compound.

Main Methods:

  • Single-crystal X-ray diffraction to determine molecular structure and conformation.

Related Experiment Videos

  • Analysis of molecular packing and intermolecular interactions.
  • Differential scanning calorimetry or similar thermal analysis to identify phase transitions.

    • Main Results:

    • The C(17)H(36)O(2) compound possesses a rod-like molecular shape.
    • One hydroxyl group adopts a gauche conformation, while the other exhibits a trans conformation.
    • The compound displays a rotator phase characterized by significant molecular mobility, akin to liquid crystals.
    • Molecular arrangement along the b-axis forms layers resembling those in smectic A liquid crystals.

    Conclusions:

    • The specific conformations of the hydroxyl groups dictate the rod-like shape and packing behavior.
    • The observed rotator phase suggests potential applications in areas requiring molecular fluidity and ordered structures.
    • The structural similarity to smectic A liquid crystals warrants further investigation into its mesophase properties.