Cesium azide

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Crystal structure
Unit cell of cesium azide
__ Cs +      __ N 1 / 3−
Crystal system

tetragonal

Space group

I 4 / mcm (No. 140)Template: room group / 140

Lattice parameters

a = 6.5412 Å, c = 8.0908 Å

General
Surname Cesium azide
Ratio formula CsN 3
External identifiers / databases
CAS number 22750-57-8
EC number 245-196-0
ECHA InfoCard 100,041,072
PubChem 6101636
Wikidata Q14773521
properties
Molar mass 174.93 g mol −1
Physical state

firmly

density

3.5 g cm −3  (25 ° C)

Melting point

310 ° C

boiling point

390 ° C (decomposition)

solubility
  • 220 g / l at 40 ° C
  • insoluble in ether
safety instructions
GHS labeling of hazardous substances
06 - Toxic or very toxic

danger

H and P phrases H: 300-310-330
P: 260-264-280-284-301 + 310-302 + 350
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cesium azide is an inorganic chemical compound of cesium from the group of azides .

Extraction and presentation

Caesiumazid, by reaction of hydrogen azide and cesium are obtained.

It can also be obtained by reacting cesium carbonate with hydrazoic acid.

properties

Cesium azide is a solid. It crystallizes in a tetragonal crystal structure with the space group I 4 / mcm (space group no. 140) and four formula units per unit cell . Template: room group / 140

use

Cesium azide can be used to make high purity cesium.

Individual evidence

  1. ↑ Ulrich Müller: Refinement of the crystal structures of KN 3 , RbN 3 , CsN 3 and TlN 3 . In: Journal of Inorganic and General Chemistry . tape 392 , no. 2 , 1972, p. 159-166 , doi : 10.1002 / zaac.19723920207 .
  2. ↑ a b c d e f data sheet Cesium azide, 99.99% trace metals basis from Sigma-Aldrich , accessed on March 18, 2013 ( PDF ).
  3. ↑ a b c d Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 458.
  4. ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Inorganic Compounds, pp. 4-57.
  5. ^ CC Addison: Inorganic Chemistry of the Main-Group Elements . Royal Society of Chemistry, 1974, ISBN 0-85186-762-6 , pp. 54 ( limited preview in Google Book search).
  6. ↑ FRITZ BLATTER and ERNST SCHUMACHER: PRODUCTION OF HIGH PURITY CAESIUM , Journal of the beg-Common Metals, 115 (1986) 307-313