Copper(II) azide

Copper(II) azide is a medium density explosive with the molecular formula Cu(N3)2.

Copper(II) azide[1]
Names
IUPAC name
Copper(II) azide
Identifiers
3D model (JSmol)
ChemSpider
UNII
  • InChI=1S/Cu.2N3/c;2*1-3-2/q+2;2*-1 Y
    Key: SXHYOTRZGGGMEV-UHFFFAOYSA-N Y
  • InChI=1/Cu.2N3/c;2*1-3-2/q+2;2*-1
    Key: SXHYOTRZGGGMEV-UHFFFAOYAL
  • [N-]=[N+]=[N-][Cu+2][N-]=[N+][N-]
  • [Cu+2].[N-]=[N+]=[N-].[N-]=[N+]=[N-]
Properties
Cu(N3)2
Molar mass 147.586 g/mol
Appearance brown orthorhombic crystals
Density 2.6 g/cm3
Melting point (explodes)
Hazards
GHS labelling:
Danger
NFPA 704 (fire diamond)
3
0
4
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 1 mg/m3 (as Cu)[2]
REL (Recommended)
 TWA 1 mg/m3 (as Cu)[2]
IDLH (Immediate danger)
 TWA 100 mg/m3 (as Cu)[2]
Related compounds
Other cations
 Lead(II) azide
Silver azide
Sodium azide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

Uses

Copper azide is very explosive and is too sensitive for any practical use unless handled in solution.

Preparation

Copper azide can be prepared by a metathesis reaction between water-soluble sources of Cu2+ and azide ions. (Spectator ions omitted in reaction below).

Cu2+ + 2 N−3 → Cu(N3)2

It can be destroyed by concentrated nitric acid to form non-explosive products, these being nitrogen, nitrogen oxides and copper(II) nitrate.

References
  1. Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 4–55, ISBN 0-8493-0594-2
  2. NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).


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