Copper(II) Azide

{{Chemical|related_anions=|solubility=|boiling_point=|appearance=Brown crystalline solid|density=2.6 g/cm^3|chemical_formula=Cu(N3)2|smiles=[N-]=[N+]=[N-].[N-]=[N+]=[N-].[Cu+2]|molar_mass=147.59 g/mol|inchl=InChI=1S/Cu.2N3/c;2*1-3-2/q+2;2*-1 KEY= SXHYOTRZGGGMEV-UHFFFAOYSA-N|melting_point=(Explosive decomposition}|pubchem_cid=57348354|chemspider=21106430|other_names=Copper(II) diazide|cas_number=|solubility_in_water=|iupac_name=Copper diazide|image1=[Copper (II) azide.jpg]|caption1=|title1=}}

Copper(II) azide is a salt with the formula Cu(N 3 ) 2. It is an explosive compound with a high sensitivity, which makes it unable to be used practically unless stored in solution.

Synthesis
Copper(II) azide can be made by reacting copper(II) chloride with sodium azide in a aqueous solution of hydroxylamine hydrochloride.

Structure
In solid form copper(II) azide is made of up of repeating units with the formula [Cu(N 3 ) 2 ]n. Copper(II) azide has an orthorhombic crystal structure, which is made up of one dimensional double chains composed of a copper(II) cation and four end-on (EO) bridged azide anions. Each copper center is six-coordinated with nitrogen from the azides in an octahedral pattern. Each copper center is connected to two other copper(II) cations by two double azide groups.