Titanium(III) oxide: Difference between revisions

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid =

| ImageFile = File:Corundum struct.png

| ImageSize =

| ImageAlt = Crystal structure

| OtherNames = titanium sesquioxide

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|CAS}}

| =

| ChemSpiderID = 109727

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 134436

| EINECS = 215-697-9

| PubChem = 123111

| StdInChI = 1S/3O.2Ti

| StdInChIKey = GQUJEMVIKWQAEH-UHFFFAOYSA-N

| SMILES = O=[Ti]O[Ti]=O

|Section2={{Chembox Properties

| Formula = Ti₂O₃

| MolarMass = 143.76 g/mol

| Appearance = violet black powder

|

Density = 4.49 g/cm³

| Solubility = insoluble

| = 2130

| MeltingPt_notes = (decomposes)

| BoilingPt =

| MagSus = +125.6·10⁻⁶ cm³/mol

| = {{Chembox

| Structure_ref =<ref>{{cite journal | last=Robinson | first=William R. | title=The crystal structures of Ti2O3, a semiconductor, and (Ti0.900V0.100)2O3, a semimetal | journal=Journal of Solid State Chemistry | publisher=Elsevier BV | volume=9 | issue=3 | year=1974 | issn=0022-4596 | doi=10.1016/0022-4596(74)90082-6 | pages=255–260| bibcode=1974JSSCh...9..255R }}</ref>

| CrystalStruct = [[Corundum]]

| SpaceGroup = R{{overline|3}}c (No. 167)

| PointGroup =

| LattConst_a = 543 pm

| LattConst_b =

| LattConst_c =

| LattConst_alpha = 56.75

| LattConst_beta =

| LattConst_gamma =

| LattConst_ref =

| LattConst_Comment =

| UnitCellVolume =

| UnitCellFormulas =

| Coordination =

| MolShape =

| OrbitalHybridisation =

| Dipole =

}}

|Section7={{Chembox Hazards

| GHS_ref=<ref>{{cite web |title=C&L Inventory |url=https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/8054 |website=echa.europa.eu |access-date=12 December 2021}}</ref>

| GHSPictograms = {{GHS09}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|413}}

| PPhrases = {{P-phrases|}}

'''Titanium(III) oxide''' [[Titanium|Ti₂]][[|O₃]] is prepared by titanium dioxide with titanium metal at 1600°C.<ref name = "Greenwood">{{Greenwood&Earnshaw}}</ref>

Ti₂O₃ the [[alumina|Al₂O₃]] corundum structure.<ref name = "Greenwood"/> It is reactive with oxidising .<ref name = "Greenwood"/> At around 200°C there is a transition from semiconducting to metallic conducting.<ref name = "Greenwood"/>

Other titanium(III) oxides include LiTi₂O₄ and LiTiO₂.<ref>{{cite journal |doi=10.1016/0022-3697(87)90076-X|title=A Survey of first-row ternary oxides LiMO2 (M = Sc-Cu)|year=1987|last1=Hewston|first1=T.A.|last2=Chamberland|first2=B.L.|journal=Journal of Physics and Chemistry of Solids|volume=48|issue=2|pages=97–108|bibcode=1987JPCS...48...97H}}</ref>

{{Oxides}}

[[Category:]]

[[Category:Transition metal oxides]]

[[Category:Semiconductor materials]]

{{inorganic-compound-stub}}