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RbBa2(N3)5: a new ternary azide.

Grigori V Vajenine1

  • 1Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany. g.vajenine@fkf.mpg.de

Acta Crystallographica. Section C, Crystal Structure Communications
|September 30, 2006
PubMed
Summary

Researchers synthesized rubidium dibarium pentaazide, RbBa2(N3)5, a novel compound with a distorted AlB2-type crystal structure. This study details its preparation and structural characterization, revealing unique cation coordination and azide group arrangements.

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Area of Science:

  • Inorganic Chemistry
  • Crystallography
  • Solid-State Chemistry

Background:

  • Azide compounds are known for their energetic properties and diverse crystal structures.
  • Understanding the synthesis and structure of novel metal azides is crucial for materials science.

Purpose of the Study:

  • To synthesize and characterize a new rubidium-barium azide compound, RbBa2(N3)5.
  • To determine the crystal structure and coordination environment of the metal atoms and azide groups.

Main Methods:

  • Synthesis from aqueous solutions of binary azides at room temperature.
  • Single-crystal X-ray diffraction for crystal structure determination.
  • Analysis of atomic positions, coordination numbers, and bond distances.

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Main Results:

  • Rubidium dibarium pentaazide, RbBa2(N3)5, was successfully synthesized.
  • The compound crystallizes in the monoclinic system, space group P2/n.
  • A distorted AlB2-type structure was observed, with Rb and Ba atoms in specific crystallographic sites and azide groups occupying interstitial voids.
  • Coordination numbers of 8 for Rb and 10 for Ba were determined.
  • Typical azide group N-N distances (1.169–1.190 Å) were confirmed.

Conclusions:

  • The successful synthesis and structural elucidation of RbBa2(N3)5 provide new insights into metal azide chemistry.
  • The distorted AlB2-type structure highlights the adaptability of metal cations and azide anions in forming complex solid-state architectures.
  • This work contributes to the fundamental understanding of inorganic azides and their potential structural motifs.