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Related Experiment Video

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Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
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Published on: June 23, 2023

3,5-Dicarboxypyridinium fluoride.

Seik Weng Ng, Yi-Ping Tong

    Acta Crystallographica. Section E, Structure Reports Online
    |August 13, 2011
    PubMed
    Summary
    This summary is machine-generated.

    This study reveals the crystal structure of a pyridine derivative salt, highlighting its unique layer formation driven by hydrogen bonds involving the fluoride ion. The findings offer insights into supramolecular chemistry and crystal engineering.

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    Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

    Published on: September 26, 2016

    Area of Science:

    • Crystallography
    • Supramolecular Chemistry
    • Materials Science

    Background:

    • Understanding the crystal structure of organic salts is crucial for predicting their physical and chemical properties.
    • Hydrogen bonding plays a significant role in the self-assembly of molecules and the formation of extended structures.

    Purpose of the Study:

    • To elucidate the crystal structure of the title salt, C(7)H(6)NO(4)(+.)F(-).
    • To investigate the role of the fluoride ion in mediating intermolecular interactions and directing crystal packing.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
    • Analysis of hydrogen bonding networks and symmetry elements was performed.

    Main Results:

    • The cation, C(7)H(6)NO(4)(+.), lies on a twofold rotation axis, with its carboxylic acid substituent showing distinct C-O single and double bonds.
    • The fluoride ion acts as a hydrogen bond acceptor for two hydroxyl and one amino group.
    • These interactions lead to the formation of a layered structure parallel to the ab plane, with the fluoride atom situated on a site of 2-fold symmetry.

    Conclusions:

    • The crystal structure is stabilized by a network of O-H⋯F and N-H⋯F hydrogen bonds.
    • The fluoride ion is a key component in organizing the supramolecular architecture.
    • This study provides a detailed structural characterization relevant to crystal engineering and materials design.