Zinc arsenide

Chemical compound of zinc and arsenic
Zinc arsenide
Names
Other names
trizinc diarsenide
Identifiers
CAS Number
  • 12006-40-5
3D model (JSmol)
  • Interactive image
ChemSpider
  • 21242020 checkY
ECHA InfoCard 100.031.338 Edit this at Wikidata
EC Number
  • 234-486-2
PubChem CID
  • 25147458
CompTox Dashboard (EPA)
  • DTXSID00893156 Edit this at Wikidata
InChI
  • InChI=1S/2As.3Zn
    Key: RHKSESDHCKYTHI-UHFFFAOYSA-N
  • [Zn].[Zn]=[As].[Zn]=[As]
Properties
Chemical formula
 Zn3As2
Molar mass 345.984 g/mol
Appearance Silver grey[1]
Density 5.53 g/cm3[1]
Melting point 1,015 °C (1,859 °F; 1,288 K)
Solubility in water
 Insoluble[1]
Structure
Crystal structure
 Tetragonal
Hazards
GHS labelling:
Pictograms
 GHS05: CorrosiveGHS06: ToxicGHS08: Health hazard
Danger
Hazard statements
 H301, H331, H350, H410
Precautionary statements
 P201, P202, P222, P231+P232, P261, P264, P270, P271, P273, P280, P281, P301+P310+P330, P304+P340, P308+P313, P321, P370+P378, P391, P403+P233, P405, P422, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
4
0
0
Safety data sheet (SDS) [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound

Zinc arsenide (Zn3As2) is a binary compound of zinc with arsenic which forms gray tetragonal crystals. It is an inorganic semiconductor with a band gap of 1.0 eV.[2]

Synthesis and reactions

Zinc arsenide can be prepared by the reaction of zinc with arsenic

3 Zn + 2 As → Zn3As2

Structure

Zn3As2 has a room-temperature tetragonal form that converts to a different tetragonal phase at 190 °C and to a third phase at 651 °C.[3] In the room-temperature form, the zinc atoms are tetrahedrally coordinated and the arsenic atoms are surrounded by six zinc atoms at the vertices of a distorted cube. The crystalline structure of zinc arsenide is very similar to that of cadmium arsenide (Cd3As2), zinc phosphide (Zn3P2) and cadmium phosphide (Cd3P2). These compounds of the Zn-Cd-P-As quaternary system exhibit full continuous solid-solution.[4]

Electronic structure

Its lowest direct and indirect bandgaps are within 30 meV of each other.[2]

References

  1. ^ a b c d "LTS Research Laboratories, Inc. Safety Data Sheet: Zinc Arsenide" (PDF). ltschem.com. Retrieved 2020-10-26.
  2. ^ a b Botha, J. R.; Scriven, G. J.; Engelbrecht, J. A. A.; Leitch, A. W. R. (1999). "Photoluminescence properties of metalorganic vapor phase epitaxial Zn3As2". Journal of Applied Physics. 86 (10): 5614–5618. Bibcode:1999JAP....86.5614B. doi:10.1063/1.371569.
  3. ^ Okamoto, H. (1992). "The As-Zn (arsenic-zinc) system". Journal of Phase Equilibria. 13 (2): 155–161. doi:10.1007/BF02667479. S2CID 98798806.
  4. ^ Trukhan, V. M.; Izotov, A. D.; Shoukavaya, T. V. (2014). "Compounds and solid solutions of the Zn-Cd-P-As system in semiconductor electronics". Inorganic Materials. 50 (9): 868–873. doi:10.1134/S0020168514090143. S2CID 94409384.
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Zinc(I)
Organozinc(I) compounds
  • Zn2(C5(CH3)5)2
Zinc(II)
  • Zn(acac)2
  • Zn(N3)2
  • ZnBr2
  • ZnCO3
  • Zn(CN)2
  • ZnCl2
  • Zn(ClO3)2
  • ZnCrO4
  • ZnF2
  • ZnH2
  • ZnI2
  • ZnMoO4
  • Zn(NO3)2
  • ZnO
  • ZnO2
  • Zn(ClO
    4    )
    2
  • Zn(OH)2
  • ZnS
  • ZnSO4
  • ZnSe
  • ZnTe
  • Zn2P2O7
  • Zn3Sb2
  • Zn3As2
  • Zn3N2
  • Zn3P2
  • ZnP2
  • Zn3(PO4)2
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
    • C
      24      H
      46      ZnO
      4
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    Arsenic compounds
    Arsenides
    As(III)
    • AsBr3
    • AsCl3
    • AsCl5
    • AsF3
    • AsH3
    • AsI3
    • As2O3
    • As2S3
    • As2Se3
    • As4S4
    • AsP
    As(III,V)
    • As2O4
    As(V)
    • AsF5
    • AsCl5
    • As2O5
    • As2S5
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    Binary arsenides
    AsH3
    +H     		He
    LiAs Be BAs C +N +O F Ne
    Na3As Mg AlAs -Si P S +Cl Ar
    K CaAs Sc Ti V Cr MnAs Fe CoAs Ni Cu Zn3As2 GaAs -Ge As Se +Br Kr
    Rb Sr YAs Zr Nb MoAs2 Tc Ru Rh PdAs2 Ag Cd3As2 InAs -Sn Sb +Te +I Xe
    Cs Ba * Lu Hf TaAs WAs2 Re Os Ir Pt Au Hg Tl Pb BiAs Po At Rn
    Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
    ↓
    * La Ce PrAs Nd Pm SmAs Eu Gd Tb Dy Ho Er Tm Yb
    ** Ac Th Pa U NpAs
    NpAs2         		PuAs Am Cm Bk Cf Es Fm Md No
    Ternary arsenides
    Quaternary arsenides
    Quinary arsenides
    See also


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