Caesium_azide

Caesium azide

Caesium azide

Chemical compound

Caesium azide or cesium azide is an inorganic compound of caesium and nitrogen. It is a salt of azide with the formula CsN3.

Quick Facts Names, Identifiers ...

Structure

CsN3 adopts the same structure as KN3, RbN3, and TlN3, crystallizing in a tetragonal distorted caesium chloride structure where each azide ion coordinates to eight metal cations, and each metal cation coordinates to eight terminal N centers.[2] When heated to 151 °C, it transitions to a cubic structure.[3]

Preparation and reactions

Caesium azide can be prepared from the neutralization reaction between hydrazoic acid and caesium hydroxide:[4]

CsOH + HN3 → CsN3 + H2O

Caesium carbonate can also be used as the base:

Cs2CO3 + HN3 → CsN3 + CO2 + H2O

Caesium sulfate reacts with barium azide to form insoluble barium sulfate and caesium azide:

Cs2SO4 + Ba(N3)2 → 2CsN3 + BaSO4↓

The thermal decomposition of CsN3 in vacuo can be used as a method of generating high purity caesium metal:[5]

2 CsN3 → 2 Cs + 3 N2

References

  1. [1]
    Perry, Dale L. (18 May 2011). Handbook of Inorganic Compounds. CRC Press. p. 110. ISBN 978-1-4398-1461-1.
  2. [2]
    Müller, Ulrich (1972). "Verfeinerung der Kristallstrukturen von KN3, RbN3, CsN3 und TIN3". Zeitschrift für anorganische und allgemeine Chemie. 392 (2): 159–166. doi:10.1002/zaac.19723920207.
  3. [3]
    McIntyre, J.E. (ed.). Dictionary of Inorganic Compounds Volume 3: C46 – Zr. Chapman & Hill. p. 3096. ISBN 0-412-30120-2.
  4. [4]
    Steudel, R.; Schenk, P. W. (1975). "Stickstoff". In Brauer, Georg (ed.). Handbuch der Präparativen Anorganischen Chemie, 3. Auflage, Band I. p. 458. ISBN 3-432-02328-6.
  5. [5]
    Blatter, Fritz; Schumacher, Ernst (15 January 1986). "Production of high purity caesium". Journal of the Less Common Metals. 115 (2): 307–313. doi:10.1016/0022-5088(86)90153-0.
Share this article:

This article uses material from the Wikipedia article Caesium_azide, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.