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Gold(III) phosphate

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Gold(III) phosphate
Names
Other names
  • Auric phosphate
Identifiers
CAS Number
3D model (JSmol)
PubChem CID
InChI
  • InChI=1S/Au.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+3;/p-3
SMILES
  • P(=O)().
Properties
Chemical formula AuPO4
Molar mass 291.94 g/mol
Appearance Pale yellow solid
Density 5.74 g/cm
Melting point 450 °C (842 °F; 723 K) (decomposes)
Solubility in water Insoluble
Solubility Insoluble in acetone
Structure
Crystal structure Monoclinic
Coordination geometry 4 (Au)
Molecular shape Square planar (around Au)
Thermochemistry
Std enthalpy of
formation (ΔfH298) 		-169.8 kJ/mol (predicted)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Gold(III) phosphate is a chemical compound with the formula AuPO4. It is a pale yellow solid that is insoluble in water and acetone. It decomposes at 450 °C into gold metal, phosphorus pentoxide, and oxygen.

Production

Gold(III) phosphate is produced by the reaction of gold(III) hydroxide and phosphoric acid at 130 °C:

AuO(OH) + H3PO4 → AuPO4 + 2H2O

It can also be produced by the replacement of phosphoric acid with a mixture of nitric acid and phosphorus pentoxide.

References

  1. ^ "Pd2P2O7 AND AuPO4 - NEW ANHYDROUS PHOSPHATES OF NOBLE METALS". Phosphorus Research Bulletin. 19. Japanese Association of Inorganic Phosphorus Chemistry: 77–82. 2005. doi:10.3363/prb1992.19.0_77.
Gold compounds
Gold(-I)
Gold(I)
Organogold(I) compounds
  • (AuC6H2(CH3)3)5
  • (C2H5)3PAuSC5H5O(CO2CH3)3CH2OCOCH3
  • AuSC5H5O(OH)3CH2OH
  • NaAuSCH2CHOHCH2SO3
  • BrAuSC4H8
  • ClAuSC4H8
  • ClAuS(CH3)2
  • ClAuP(C6H5)3
  • Na2AuSCHCO2CH2CO2
  • NaAuSCHCO2CH2CO2H
    • Gold(II)
    Gold(I,III)
    Gold(III)
    Aurates(III)
  • HAuCl4
  • NaAuCl4
  • HAuBr4
  • HAu(NO3)4
  • ClO2Au(ClO4)4
  • NaAuO2
    • Gold(V)
    Gold(VI)
    Phosphates
    H3PO4

    		 He
    Li3PO4 Be BPO4
    +BO3     		C (NH4)3PO4
    (NH4)2HPO4
    NH4H2PO4
    -N     		O +F Ne
    Na3PO4
    Na2HPO4
    NaH2PO4     		Mg3(PO4)2 AlPO4 Si P +SO4
    -S     		Cl Ar
    K3PO4
    K2HPO4
    KH2PO4     		Ca3(PO4)2 ScPO4 Ti VPO4 CrPO4 Mn3(PO4)2
    MnPO4     		Fe3(PO4)2
    FePO4     		Co3(PO4)2 Ni3(PO4)2 Cu3(PO4)2 Zn3(PO4)2 GaPO4 Ge As -Se Br Kr
    Rb3PO4 Sr3(PO4)2 YPO4 Zr3(PO4)4 Nb Mo Tc Ru Rh Pd Ag3PO4 Cd3(PO4)2 InPO4 Sn SbPO4
    -SbO4     		Te I Xe
    Cs3PO4 Ba3(PO4)2 * LuPO4 Hf Ta W Re Os Ir Pt AuPO4 Hg Tl3PO4 Pb3(PO4)2 BiPO4 Po At Rn
    Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
     
    * LaPO4 CePO4 PrPO4 NdPO4 PmPO4 SmPO4 EuPO4 GdPO4 TbPO4 DyPO4 HoPO4 ErPO4 TmPO4 YbPO4
    ** AcPO4 Th3(PO4)4 Pa U(PO4)2 Np PuPO4 AmPO4 CmPO4 Bk Cf Es Fm Md No
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