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Related Experiment Videos

4,4,6,6-tetrachloro-2,2-(2,2-dimethylpropane-1,3-diyldioxy)-1,3,5,2lambda5,4lambda5,6lambda5-triazatriphosphorine.

N Satish Kumar1, K C Kumara Swamy

  • 1School of Chemistry, University of Hyderabad, Hyderabad 500 046, India.

Acta Crystallographica. Section C, Crystal Structure Communications
|December 12, 2001
PubMed
Summary

This study examines a spirocyclic phosphazene compound, finding its P-N bonds are not alternating in length, unlike similar structures. NMR spectroscopy suggests a conformational equilibrium in solution.

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Area of Science:

  • Inorganic Chemistry
  • Organophosphorus Chemistry
  • Crystallography

Background:

  • Spirocyclic compounds containing phosphazene rings are known for unique structural and bonding properties.
  • Alternating long-short P-N bond lengths are a characteristic feature in many analogous spirocyclic phosphazenes.
  • Understanding the structure-property relationships in these compounds is crucial for developing new materials.

Purpose of the Study:

  • To characterize the structure and bonding of a specific spirocyclic phosphazene compound (C5H10Cl4N3O2P3).
  • To investigate the P-N bond lengths within the phosphazene ring and compare them to analogous structures.
  • To determine the conformational behavior of the compound in the solid state and in solution.

Main Methods:

  • X-ray crystallography was used to determine the solid-state structure.

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  • Nuclear Magnetic Resonance (NMR) spectroscopy was employed to study the compound in solution.
  • Bond lengths and ring conformations were analyzed.

    • Main Results:

    • The spirocyclic phosphazene compound C5H10Cl4N3O2P3 lacks alternating long-short P-N bond lengths in its phosphazene ring.
    • The phosphazene ring adopts a chair conformation in the solid state.
    • NMR data indicates a conformational equilibrium in solution.

    Conclusions:

    • The absence of alternating P-N bond lengths distinguishes this compound from other spirocyclic phosphazenes.
    • The conformational flexibility in solution, indicated by NMR, is an important characteristic.
    • Further studies may elucidate the implications of these findings for reactivity and applications.