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Related Experiment Videos

First structural characterization of binary AsIII and SbIII azides.

Ralf Haiges1, Ashwani Vij, Jerry A Boatz

  • 1Loker Research Institute, University of Southern California, Los Angeles, CA 90089-1661, USA.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|January 22, 2004
PubMed
Summary

Researchers synthesized highly explosive arsenic and antimony triazides. Antimony triazide exhibits perfect C(3) symmetry, while arsenic triazide shows distortions due to crystal packing effects.

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Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Computational Chemistry

Background:

  • Azide compounds are known for their energetic properties.
  • Synthesis and characterization of novel energetic materials are crucial for safety and application development.

Purpose of the Study:

  • To synthesize and characterize arsenic triazide (As(N(3))(3)) and antimony triazide (Sb(N(3))(3)).
  • To investigate the structural and spectroscopic properties of these compounds.
  • To compare experimental findings with theoretical calculations.

Main Methods:

  • Synthesis of As(N(3))(3) and Sb(N(3))(3) via reaction of metal fluorides with trimethylsilyl azide in sulfur dioxide.
  • Purification by sublimation.
  • Determination of crystal structures using X-ray diffraction.

Related Experiment Videos

  • Spectroscopic analysis including (14)N NMR, infrared, and Raman spectroscopy.
  • Ab initio second-order perturbation theory calculations.

    • Main Results:

    • Pure As(N(3))(3) and Sb(N(3))(3) were successfully obtained.
    • Sb(N(3))(3) was found to have a propeller-shaped, pyramidal structure with C(3) symmetry.
    • As(N(3))(3) displayed significant distortion from C(3) symmetry, attributed to crystal packing effects.
    • Experimental spectroscopic data were consistent with theoretical calculations.

    Conclusions:

    • The study successfully synthesized and characterized two highly energetic triazide compounds.
    • Structural differences between arsenic and antimony triazides were elucidated, highlighting the influence of crystal packing.
    • The combination of experimental and computational methods provides a comprehensive understanding of these molecules.