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{{distinguish|Acetic anhydride}} |
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{{Chemical-importance|date=May 2011}} |
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{{Chembox |
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{{Chembox |
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| Verifiedfields = changed |
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| verifiedrevid = 428182931 |
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| Watchedfields = changed |
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| verifiedrevid = 428741340 |
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| Name = Actinium(III) oxide |
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| Name = Actinium(III) oxide |
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| ImageFile = Actinium sesquioxide.jpg |
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| ImageFile = Actinium sesquioxide.jpg |
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| ImageFile2 = La2O3structure.jpg |
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| ImageFile2 = La2O3structure.svg |
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| Image2Size = 121 |
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| ImageSize2 = 121 |
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| Image2Name = Unit cell, ball and stick model of actinium(III) oxide |
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| ImageName2 = Unit cell, ball and stick model of actinium(III) oxide |
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| IUPACName = Actinium(III) oxide |
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| IUPACName = Actinium(III) oxide |
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| SystematicName = Actinium(3+) oxide |
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| SystematicName = Actinium(3+) oxide |
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| OtherNames = Actinium sesquioxide |
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| OtherNames = Actinium sesquioxide |
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| Section1 = {{Chembox Identifiers |
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| Section1 = {{Chembox Identifiers |
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| CASNo_Ref = {{cascite|changed|??}} |
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| CASNo = |
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| CASNo = 12002-61-8 |
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| CASNo_Ref = |
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| SMILES = .... |
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| ChemSpiderID = 10700920 |
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| SMILES = .... |
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| StdInChI = |
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| StdInChI =1S/2Ac.3O/q;;3*-2 |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}}= |
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| StdInChI_Ref = {{stdinchicite|correct|pubchem}} |
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| StdInChIKey = |
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| StdInChIKey =MAPOZTWVBAGEOP-UHFFFAOYSA-N |
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| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}= |
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| StdInChIKey_Ref = {{stdinchicite|correct|pubchem}} |
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| PubChem = 21946271 |
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| EC_number = 234-417-6 |
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}} |
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| Section2 = {{Chembox Properties |
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| Section2 = {{Chembox Properties |
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| Ac = 2 |
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| Ac=2 | O=3 |
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| O = 3 |
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| Appearance = white |
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| ExactMass = 501.998 g mol<sup>-1</sup> |
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| MolarMass = 502.053 g/mol |
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| Appearance = white |
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| MeltingPtC = 2327 |
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| MeltingPt_ref = <ref name="cry" /> |
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}} |
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| Section3 = {{Chembox Structure |
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| Section3 = {{Chembox Structure |
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| CrystalStruct = Trigonal, ] |
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| CrystalStruct = Trigonal, ] |
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| SpaceGroup = P-3m1, No. 164 |
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| SpaceGroup = P{{overline|3}}m1, No. 164 |
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| LattConst_a = 408 pm |
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| LattConst_c = 630 pm<ref name="cry">{{cite journal |author1=Christine Guéneau |author2=Alain Chartier |author3=Paul Fossati |author4=Laurent Van Brutzel |author5=Philippe Martin |title=Thermodynamic and Thermophysical Properties of the Actinide Oxides |journal=Comprehensive Nuclear Materials 2nd Ed. |date=2020 |volume=7 |pages=111–154 |doi=10.1016/B978-0-12-803581-8.11786-2 |isbn=9780081028667 |s2cid=261051636 |language=en}}</ref> |
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| Section4 = {{Chembox Related |
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| Section4 = {{Chembox Related |
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| OtherCations = ]}} |
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| OtherCations = ]}} |
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'''Actinium(III) oxide''' is Ac<sub>2</sub>O<sub>3</sub>, a ] containing the rare radioactive element ]. It is similar to its corresponding lanthanum compound, ], and contains actinium in the ] +3.<ref name=bse>, ] (in Russian)</ref><ref>{{cite journal|title = The Preparation and Identification of Some Pure Actinium Compounds|journal = Journal of the American Chemical Society|last = Sherman|first = Fried|pages = 771–775|doi = 10.1021/ja01158a034|year =1950|volume = 72|last2 = Hagemann|first2 = French|last3 = Zachariasen|first3 = W. H.}}</ref> |
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'''Actinium(III) oxide''' is a ] containing the rare radioactive element ]. It has the formula Ac<sub>2</sub>O<sub>3</sub>. It is similar to its corresponding ] compound, ], and contains actinium in the ] +3.<ref name=bse>, ] (in Russian)</ref><ref>{{cite journal|title = The Preparation and Identification of Some Pure Actinium Compounds|journal = Journal of the American Chemical Society|last1 = Sherman|first1 = Fried|pages = 771–775|doi = 10.1021/ja01158a034|year =1950|volume = 72|last2 = Hagemann|first2 = French|last3 = Zachariasen|first3 = W. H.|issue = 2}}</ref> Actinium oxide is not to be confused with ]<sub>2</sub>O (]), where Ac is an abbreviation for acetyl instead of the symbol of the element actinium. |
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==References== |
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== Reactions == |
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* Ac<sub>2</sub>O<sub>3</sub> + 6HF → 2AcF<sub>3</sub> + 3H<sub>2</sub>O |
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* Ac<sub>2</sub>O<sub>3</sub> + 6HCl → 2AcCl<sub>3</sub> + 3H<sub>2</sub>O |
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* 4Ac(NO<sub>3</sub>)<sub>3</sub> → 2Ac<sub>2</sub>O<sub>3</sub> + 12NO<sub>2</sub> + 3O<sub>2</sub> |
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* 4Ac + 3O<sub>2</sub> → 2Ac<sub>2</sub>O<sub>3</sub> |
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* Ac<sub>2</sub>O<sub>3</sub> + 2AlBr<sub>3</sub> → 2AcBr<sub>3</sub> + Al<sub>2</sub>O<sub>3</sub> |
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* 2Ac(OH)<sub>3</sub> → Ac<sub>2</sub>O<sub>3</sub> + 3H<sub>2</sub>O |
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* Ac<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub> → Ac<sub>2</sub>O<sub>3</sub> + 3CO<sub>2</sub> + 3CO |
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* Ac<sub>2</sub>O<sub>3</sub> + 3H<sub>2</sub>S → Ac<sub>2</sub>S<sub>3</sub> + 3H<sub>2</sub>O |
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== References == |
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{{reflist}} |
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{{reflist}} |
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{{Oxides}} |
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{{Actinium compounds}} |
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] |
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] |
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{{inorganic-compound-stub}} |
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{{inorganic-compound-stub}} |
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] |
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