Gold chalcogenides
Class of chemical compound
Gold chalcogenides are compounds formed between gold and one of the chalcogens, elements from group 16 of the periodic table: oxygen, sulfur, selenium, or tellurium.
- Gold(III) oxide, Au2O3. Decomposes into gold and oxygen above 160 °C, and dissolves in concentrated alkalis to form solutions which probably contain the [Au(OH)4]− ion
- Gold(I) sulfide, Au2S. Formed by reaction of hydrogen sulfide with gold(I) compounds.
- Gold(III) sulfide, Au2S3, claimed material but unsubstantiated.
- Gold tellurides: Au2Te3, Au3Te5, and AuTe2 (approximate formulæ) are known as non-stoichiometric compounds. They show metallic conductivity. Au3Te5 is a superconductor at 1.62 K.[1]
Gold telluride minerals, such as calaverite and krennerite (AuTe2), petzite (Ag3AuTe2), and sylvanite (AgAuTe2), are minor ores of gold (and tellurium). See telluride minerals for more information.
References
- ^ Luo, H.L.; Merriam, M.F.; Hamilton, D.C. (1964). "Superconducting Metastable Compounds". Science. 145 (3632): 581–583. Bibcode:1964Sci...145..581L. doi:10.1126/science.145.3632.581. PMID 17735806. S2CID 41529555.
- Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
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Salts and covalent derivatives of the telluride ion
H2Te | He | ||||||||||||||||||||
Li2Te | BeTe | B | CTe2 (CH3)2Te | (NH4)2Te | O | F | Ne | ||||||||||||||
Na2Te | MgTe | Al2Te | Si | P0.8Te0.2 | S | Cl | Ar | ||||||||||||||
K2Te | CaTe | Sc2Te3 | Ti | VTe2 | CrTe Cr2Te3 | MnTe MnTe2 | FeTe | CoTe | NiTe | Cu2Te CuTe CuTe2 | ZnTe | GaTe Ga2Te3 -Ga | GeTe -Ge | As2Te3 As4Te3 +As | Se | +Br | Kr | ||||
Rb2Te | SrTe | Y2Te3 | ZrTe5 | NbTe2 | MoTe2 | Tc | Ru | Rh | Pd | Ag2Te | CdTe | In2Te3 | SnTe SnTe2 | Sb2Te3 | Te2- Te2- n | I | Xe | ||||
Cs2Te | BaTe | * | LuTe Lu2Te3 | HfTe5 | TaTe2 | WTe2 WTe3 | ReTe2 | Os | Ir | Pt | AuxTey | HgTe | Tl2Te | PbTe | Bi2Te3 | Po | At | Rn | |||
Fr | RaTe | ** | Lr | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | |||
* | LaTe La2Te3 | CeTe Ce2Te3 | PrTe Pr2Te3 | NdTe Nd2Te3 | Pm | SmTe Sm2Te3 | EuTe Eu2Te3 | GdTe Gd2Te3 | TbTe Tb2Te3 | DyTe Dy2Te3 | HoTe Ho2Te3 | ErTe Er2Te3 | TmTe Tm2Te3 | YbTe Yb2Te3 | |||||||
** | Ac | ThTe2 | Pa | UTe2 | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No |