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Zinc azide

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Zinc azide
Names
IUPAC name Zinc(II) azide
Other names Zinc diazide
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2N3.Zn/c2*1-3-2;/q2*-1;+2Key: QFDUTPNKBRXHTC-UHFFFAOYSA-N
SMILES
  • ==.==.
Properties
Chemical formula Zn(N3)2
Molar mass 149.4 g/mol
Appearance White solid
Density 2.559 g/cm (α polymorph)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Zinc azide Zn(N3)2 is an inorganic compound composed of zinc cations (Zn) and azide anions (N−3). It is a white, explosive solid that can be prepared by the protonolysis of diethylzinc with hydrazoic acid:

Zn(C2H5)2 + 2 HN3 → Zn(N3)2 + 2 C2H6

Properties

Zinc azide is a coordination polymer which crystallizes in three polymorphs, all of which feature tetrahedral zinc centers and bridging azide ligands. α-Zn(N3)2 crystallizes in the monoclinic space group and is stable, while the other two polymorphs are metastable. P21/n. β-Zn(N3)2 is trigonal, space group P3221, and γ-Zn(N3)2 is monoclinic, space group C2.

It is easily hydrolyzed, and attempts to prepare it in aqueous solution resulted in the precipitation of basic azides Zn(OH)2−x(N3)x (x = 0.9–1.0). Both the α- and β-forms were found to be very friction- and shock-sensitive, violently exploding in blue flashes, but can be made to decompose slowly by gentle heating, giving off nitrogen gas. In a sealed glass tube with inert atmosphere, this yields zinc nitride, Zn3N2.

References

  1. ^ Schulz, Axel; Villanger, Alexander (2016). "Binary Zinc Azides". Chemistry: A European Journal. 22 (6): 2032–2038. doi:10.1002/chem.201504524. PMID 26749253.
Zinc compounds
Zinc(I)
Organozinc(I) compounds
Zinc(II)
Organozinc(II) compounds
  • Zn(CH3)2
  • Zn(C2H5)2
  • Zn(CH3COO)2
  • Zn(CH(CH3)2)2
  • Zn(C(CH3)3)2
  • Zn(C6H5)2
  • Zn(C3H5O3)2
  • ZnICH2I
    • Salts and covalent derivatives of the azide ion
    HN3 He
    LiN3 Be(N3)2 B(N3)3 CH3N3
    C(N3)4
    CO(N3)2     		NH4N3
    N3NO
    N(N3)3
    H2N–N3         		O FN3 Ne
    NaN3 Mg(N3)2 Al(N3)3 Si(N3)4 P SO2(N3)2 ClN3 Ar
    KN3 Ca(N3)2 Sc(N3)3 Ti(N3)4 VO(N3)3 Cr(N3)3
    CrO2(N3)2     		Mn(N3)2 Fe(N3)2
    Fe(N3)3     		Co(N3)2
    Co(N3)3     		Ni(N3)2 CuN3
    Cu(N3)2     		Zn(N3)2 Ga(N3)3 Ge As(N3)5 Se(N3)4 BrN3 Kr
    RbN3 Sr(N3)2 Y(N3)3 Zr(N3)4 Nb Mo Tc Ru(N3)6 Rh(N3)6 Pd(N3)2 AgN3 Cd(N3)2 In Sn Sb(N3)5 Te(N3)4 IN3 Xe(N3)2
    CsN3 Ba(N3)2 * Lu(N3)3 Hf Ta W Re Os Ir(N3)6 Pt(N3)6 Au(N3)4 Hg2(N3)2
    Hg(N3)2     		TlN3 Pb(N3)2 Bi(N3)3 Po At Rn
    Fr Ra(N3)2 ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
     
    * La(N3)3 Ce(N3)3
    Ce(N3)4     		Pr Nd Pm Sm(N3)3 Eu(N3)2
    Eu(N3)3     		Gd(N3)3 Tb Dy(N3)3 Ho(N3)3 Er Tm Yb(N3)3
    ** Ac(N3)3 Th(N3)4 Pa UO2(N3)2 Np Pu Am Cm Bk Cf Es Fm Md No


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