Thallium(I) oxide

Thallium(I) oxide
Names


Other names Thallous oxide
Identifiers
CAS Number	1314-12-1^Y
3D model (Jmol)	Interactive image
ECHA InfoCard	100.013.838
EC Number	215-220-4
PubChem	16684203
InChI InChI=1/O.2Tl/q-2;2*+1
SMILES O([Tl])[Tl]
Properties
Chemical formula	Tl₂O
Molar mass	424.77 g/mol
Appearance	black orthorhombic crystals hygroscopic
Density	10.45 g/cm³
Melting point	596 °C (1,105 °F; 869 K)
Boiling point	1,080 °C (1,980 °F; 1,350 K) (decomposes)
Solubility in water	soluble
Solubility	soluble in alcohol and acid
Structure
Crystal structure	Rhombohedral, hR18^[1]
Space group	R-3m, No. 166
Related compounds
Other cations	Thallium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is ^YN ?)
Infobox references

Thallium(I) oxide is the inorganic compound of thallium and oxygen with the formula Tl₂O in which thallium is in its +1 oxidation state. It is black and produces a basic yellow solution of thallium(I) hydroxide (TlOH) when dissolved in water. It is formed by heating solid TlOH or Tl₂CO₃ in the absence of air. Thallium oxide is used to make special high refractive index glass. Thallium oxide is a component of several high temperature superconductors. Thallium(I) oxide reacts with acids to make thallium(I) salts.

Tl₂O adopts the anti-cadmium iodide structure in the solid state.^[1] In this way, the Tl(I) centers are pyrdamidal and the oxide centers are octahedral.

Thallium(I) oxide, like all thallium compounds, is highly toxic.

References

1 2 Sabrowsky H. (1971). "Zur Darstellung und Kristallstruktur von Tl₂O". Zeitschrift für anorganische und allgemeine Chemie. 381 (3): 266. doi:10.1002/zaac.19713810305.

External links

Thallium compounds

TBCCO Tl(C₂H₃O₂)₃ TlN₃ TlH TlOH Tl(OH)₃ TlI TlI₃ TlBr Tl₂CO₃ TlCl TlF Tl₂O Tl₂O₃ Tl₂SO₄ Tl₂S Tl₂Te Tl(NO₃)₃

Oxides

Mixed oxidation states	Antimony tetroxide (Sb₂O₄) Cobalt(II,III) oxide (Co₃O₄) Iron(II,III) oxide (Fe₃O₄) Lead(II,IV) oxide (Pb₃O₄) Manganese(II,III) oxide (Mn₃O₄) Silver(I,III) oxide (Ag₂O₂) Triuranium octoxide (U₃O₈)

+1 oxidation state	Copper(I) oxide (Cu₂O) Dicarbon monoxide (C₂O) Dichlorine monoxide (Cl₂O) Lithium oxide (Li₂O) Potassium oxide (K₂O) Rubidium oxide (Rb₂O) Silver oxide ([Ag₂O) Thallium(I) oxide (Tl₂O) Sodium oxide (Na₂O) Water (hydrogen oxide) (H₂O)

+2 oxidation state	Aluminium(II) oxide (AlO) Barium oxide (BaO) Beryllium oxide (BeO) Cadmium oxide (CdO) Calcium oxide (CaO) Carbon monoxide (CO) Chromium(II) oxide (CrO) Cobalt(II) oxide (CoO) Copper(II) oxide (CuO) Iron(II) oxide (FeO) Lead(II) oxide (PbO) Magnesium oxide (MgO) Mercury(II) oxide (HgO) Nickel(II) oxide (NiO) Nitric oxide (NO) Palladium(II) oxide (PdO) Strontium oxide (SrO) Sulfur monoxide (SO) Disulfur dioxide (S₂O₂) Tin(II) oxide (SnO) Titanium(II) oxide (TiO) Vanadium(II) oxide (VO) Zinc oxide (ZnO)

+3 oxidation state	Aluminium oxide (Al₂O₃) Antimony trioxide (Sb₂O₃) Arsenic trioxide (As₂O₃) Bismuth(III) oxide (Bi₂O₃) Boron trioxide (B₂O₃) Chromium(III) oxide (Cr₂O₃) Dinitrogen trioxide (N₂O₃) Erbium(III) oxide (Er₂O₃) Gadolinium(III) oxide (Gd₂O₃) Gallium(III) oxide (Ga₂O₃) Holmium(III) oxide (Ho₂O₃) Indium(III) oxide (In₂O₃) Iron(III) oxide (Fe₂O₃) Lanthanum oxide (La₂O₃) Lutetium(III) oxide (Lu₂O₃) Nickel(III) oxide (Ni₂O₃) Phosphorus trioxide (P₄O₆) Promethium(III) oxide (Pm₂O₃) Rhodium(III) oxide (Rh₂O₃) Samarium(III) oxide (Sm₂O₃) Scandium oxide (Sc₂O₃) Terbium(III) oxide (Tb₂O₃) Thallium(III) oxide (Tl₂O₃) Thulium(III) oxide (Tm₂O₃) Titanium(III) oxide (Ti₂O₃) Tungsten(III) oxide (W₂O₃) Vanadium(III) oxide (V₂O₃) Ytterbium(III) oxide (Yb₂O₃) Yttrium(III) oxide (Y₂O₃)

+4 oxidation state	Carbon dioxide (CO₂) Carbon trioxide (CO₃) Cerium(IV) oxide (CeO₂) Chlorine dioxide (ClO₂) Chromium(IV) oxide (CrO₂) Dinitrogen tetroxide (N₂O₄) Germanium dioxide (GeO₂) Hafnium(IV) oxide (HfO₂) Lead dioxide (PbO₂) Manganese dioxide (MnO₂) Nitrogen dioxide (NO₂) Plutonium(IV) oxide (PuO₂) Rhodium(IV) oxide (RhO₂) Ruthenium(IV) oxide (RuO₂) Selenium dioxide (SeO₂) Silicon dioxide (SiO₂) Sulfur dioxide (SO₂) Tellurium dioxide (TeO₂) Thorium dioxide (ThO₂) Tin dioxide (SnO₂) Titanium dioxide (TiO₂) Tungsten(IV) oxide (WO₂) Uranium dioxide (UO₂) Vanadium(IV) oxide (VO₂) Zirconium dioxide (ZrO₂)

+5 oxidation state	Antimony pentoxide (Sb₂O₅) Arsenic pentoxide (As₂O₅) Dinitrogen pentoxide (N₂O₅) Niobium pentoxide (Nb₂O₅) Phosphorus pentoxide (P₂O₅) Tantalum pentoxide (Ta₂O₅) Vanadium(V) oxide (V₂O₅)

+6 oxidation state	Chromium trioxide (CrO₃) Molybdenum trioxide (MoO₃) Rhenium trioxide (ReO₃) Selenium trioxide (SeO₃) Sulfur trioxide (SO₃) Tellurium trioxide (TeO₃) Tungsten trioxide (WO₃) Uranium trioxide (UO₃) Xenon trioxide (XeO₃)

+7 oxidation state	Dichlorine heptoxide (Cl₂O₇) Manganese heptoxide (Mn₂O₇) Rhenium(VII) oxide (Re₂O₇) Technetium(VII) oxide (Tc₂O₇)

+8 oxidation state	Osmium tetroxide (OsO₄) Ruthenium tetroxide (RuO₄) Xenon tetroxide (XeO₄) Iridium tetroxide (IrO₄) Hassium tetroxide (HsO₄)

Related	Oxocarbon Suboxide Oxyanion Ozonide

Oxides are sorted by oxidation state. Category:Oxides

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