Titanium(III) oxide

Titanium(III) oxide
Crystal structure
Names
IUPAC name
titanium(III) oxide
Other names
titanium sesquioxide
Identifiers
CAS Number
  • 1344-54-3 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:134436 checkY
ChemSpider
  • 109727
ECHA InfoCard 100.014.271 Edit this at Wikidata
EC Number
  • 215-697-9
PubChem CID
  • 123111
CompTox Dashboard (EPA)
  • DTXSID20893931 Edit this at Wikidata
InChI
  • InChI=1S/3O.2Ti
    Key: GQUJEMVIKWQAEH-UHFFFAOYSA-N
  • O=[Ti]O[Ti]=O
Properties
Chemical formula
 Ti2O3
Molar mass 143.76 g/mol
Appearance violet black powder
Odor odorless
Density 4.49 g/cm3
Melting point 2,130 °C (3,870 °F; 2,400 K) (decomposes)
Solubility in water
 insoluble
Magnetic susceptibility (χ)
 +125.6·10−6 cm3/mol
Structure[1]
Crystal structure
 Corundum
Space group
 R3c (No. 167)
Lattice constant
a = 543 pm
α = 56.75°, β = 90°, γ = 90°
Hazards
GHS labelling:[2]
GHS09: Environmental hazard
Warning
H413
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound

Titanium(III) oxide is the inorganic compound with the formula Ti2O3. A black semiconducting solid, it is prepared by reducing titanium dioxide with titanium metal at 1600 °C.[3]

Ti2O3 adopts the Al2O3 (corundum) structure.[3] It is reactive with oxidising agents.[3] At around 200 °C, there is a transition from semiconducting to metallic conducting.[3] Titanium(III) oxide occurs naturally as the extremely rare mineral in the form of tistarite.[4]

Other titanium(III) oxides include LiTi2O4 and LiTiO2.[5]

References

  1. ^ Robinson, William R. (1974). "The crystal structures of Ti2O3, a semiconductor, and (Ti0.900V0.100)2O3, a semimetal". Journal of Solid State Chemistry. 9 (3). Elsevier BV: 255–260. Bibcode:1974JSSCh...9..255R. doi:10.1016/0022-4596(74)90082-6. ISSN 0022-4596.
  2. ^ "C&L Inventory". echa.europa.eu. Retrieved 12 December 2021.
  3. ^ a b c d Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  4. ^ Mindat, http://www.mindat.org/min-38695.html
  5. ^ Hewston, T.A.; Chamberland, B.L. (1987). "A Survey of first-row ternary oxides LiMO2 (M = Sc-Cu)". Journal of Physics and Chemistry of Solids. 48 (2): 97–108. Bibcode:1987JPCS...48...97H. doi:10.1016/0022-3697(87)90076-X.
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Titanium(II)
  • TiCl2
  • TiH2
  • TiBr2
  • TiI2
  • TiO
  • TiS
  • TiSi2
Organotitanium(II) compounds
[(C5H5)2Ti(CO)2]
Titanium(III)
  • TiAl
  • TiBr3
  • TiCl3
  • TiF3
  • TiI3
  • TiN
  • TiP
  • Ti2O3
  • Ti2S3
Organotitanium(III) compounds
[(C5H5)2TiCl]2
Titanium(IV)
  • TiB2
  • TiBr4
  • TiC
  • TiS(S2)
  • TiCl4
  • Ti(ClO4)4
  • TiF4
  • H2TiF6
  • TiH4
  • TiI4
  • TiOSO4
  • Ti(NMe2)4
  • Ti(NO3)4
  • TiO2
  • H4TiO4
  • Ti(C2H3O2)4
  • Ti4(OCH2CH3)16
  • Ti(OCH(CH3)2)4
  • Ti(OCH2CH2CH2CH3)4
  • KTiOPO4
  • NiO·Sb2O3·20TiO2
  • TiS2
  • TiSe2
  • TiSi2
  • Ti(C
    3    H
    5    O
    3    )
    4
Titanate compounds
  • BaTiO3
  • Ba2TiO4
  • Bi4Ti3O12
  • CaTiO3
  • CaCu3Ti4O12
  • CaZrTi2O7
  • Cs2TiO3
  • Dy2Ti2O7
  • EuBaTiO4
  • FeTiO3
  • Ho2Ti2O7
  • Li2TiO3
  • MnTiO3
  • Na2Ti3O7
  • Na0.5Bi0.5TiO3
  • Na2TiF6
  • K2TiF6
  • Li2TiF6
  • Rb2TiF6
  • NiTiO3
  • PbTiO3
  • Pb(Zr,Ti)O3
  • SrTiO3
  • ZnTiO3
Organotitanium(IV) compounds
  • [(C5H5)2TiCl2]
  • [(C5H5)2Ti(CH3)2]
  • [(C5H5)2TiS5]
  • [(C5H5)2Ti(μ-Cl)(μ-CH2)Al(CH3)2]
  • [(η5-C5H4-CH2C6H4OCH3)2TiCl2]
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Mixed oxidation states
+1 oxidation state
+2 oxidation state
+3 oxidation state
  • Actinium(III) oxide (Ac2O3)
  • Aluminium oxide (Al2O3)
  • Americium(III) oxide (Am2O3)
  • Antimony trioxide (Sb2O3)
  • Arsenic trioxide (As2O3)
  • Berkelium(III) oxide (Bk2O3)
  • Bismuth(III) oxide (Bi2O3)
  • Boron trioxide (B2O3)
  • Caesium sesquioxide (Cs2O3)
  • Californium(III) oxide (Cf2O3)
  • Cerium(III) oxide (Ce2O3)
  • Chromium(III) oxide (Cr2O3)
  • Cobalt(III) oxide (Co2O3)
  • Dinitrogen trioxide (N2O3)
  • Dysprosium(III) oxide (Dy2O3)
  • Einsteinium(III) oxide (Es2O3)
  • Erbium(III) oxide (Er2O3)
  • Europium(III) oxide (Eu2O3)
  • Gadolinium(III) oxide (Gd2O3)
  • Gallium(III) oxide (Ga2O3)
  • Gold(III) oxide (Au2O3)
  • Holmium(III) oxide (Ho2O3)
  • Indium(III) oxide (In2O3)
  • Iron(III) oxide (Fe2O3)
  • Lanthanum oxide (La2O3)
  • Lutetium(III) oxide (Lu2O3)
  • Manganese(III) oxide (Mn2O3)
  • Neodymium(III) oxide (Nd2O3)
  • Nickel(III) oxide (Ni2O3)
  • Phosphorus trioxide (P4O6)
  • Praseodymium(III) oxide (Pr2O3)
  • 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
+5 oxidation state
+6 oxidation state
+7 oxidation state
+8 oxidation state
Related
Oxides are sorted by oxidation state. Category:Oxides


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