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Diisopropylammonium hydrogen difluoride.

G J Reiss1

  • 1Lehrstuhl für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany. reissg@uni-duesseldorf.de

Acta Crystallographica. Section C, Crystal Structure Communications
|August 11, 2001
PubMed
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Researchers synthesized a new compound, diisopropylammonium hydrogen difluoride, by reacting diisopropylamine with hydrofluoric acid. This study reveals its unique polymeric chain structure formed by hydrogen bonding between cations and anions.

Area of Science:

  • Inorganic Chemistry
  • Crystallography
  • Materials Science

Background:

  • Hydrogen difluoride anions are known to form polymeric structures.
  • Understanding hydrogen bonding is crucial for materials design.

Purpose of the Study:

  • To synthesize and characterize the novel compound diisopropylammonium hydrogen difluoride.
  • To investigate the crystal structure and hydrogen bonding interactions within the synthesized compound.

Main Methods:

  • Chemical synthesis involving the reaction of diisopropylamine with concentrated hydrofluoric acid.
  • X-ray diffraction analysis to determine the crystal structure.

Main Results:

  • Successful synthesis of diisopropylammonium hydrogen difluoride (C(6)H(16)N(+).HF(2)(-)).

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  • The crystal structure features polymeric zigzag chains formed by hydrogen bonds between cations and anions along the [100] direction.
  • Chains are arranged in a hexagonal pattern, with each chain surrounded by six neighbors.
  • Strong hydrogen bonding observed within the hydrogen difluoride anion (F-H...F angle of 174 degrees), indicating a non-centered anion.

    • Conclusions:

    • The study elucidates the unique 1D polymeric structure of diisopropylammonium hydrogen difluoride.
    • The findings highlight the significant role of hydrogen bonding in dictating the supramolecular architecture of ionic compounds.