| Revision as of 12:37, 15 February 2012 editBeetstra (talk | contribs)Edit filter managers, Administrators172,031 edits Saving copy of the {{chembox}} taken from revid 473592307 of page Europium(III)_chloride for the Chem/Drugbox validation project (updated: ''). |
Latest revision as of 21:09, 4 February 2023 edit Smokefoot (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers74,550 editsm Reverted edits by KimoLborough (talk) to last version by Praseodymium-141Tag: Rollback |
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{{ambox | text = This page contains a copy of the infobox ({{tl|chembox}}) taken from revid of page ] with values updated to verified values.}} |
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{{chembox |
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{{chembox |
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| Watchedfields = changed |
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| Watchedfields = changed |
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| verifiedrevid = 434636546 |
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| verifiedrevid = 476995284 |
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| Name = Europium(III) chloride |
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| Name = Europium(III) chloride |
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| ImageFile = Europium(III)_chloride_hexahydrate.jpg |
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| ImageFile1 = Europium(III)_chloride_hexahydrate.jpg |
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| ImageFileL1 = UCl3.png |
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| ImageFile2 = UCl3 without caption.png |
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| ImageFileR1 = Cerium bromide (space filling) 2.png |
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| ImageName = Crystals of europium(III) chloride hexahydrate |
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| IUPACName = Europium(III) chloride<br/>Europium trichloride |
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| IUPACName = Europium(III) chloride<br/>Europium trichloride |
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| Section1 = {{Chembox Identifiers |
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|Section1={{Chembox Identifiers |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID = 23194 |
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| ChemSpiderID = 23194 |
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| InChI = 1/3ClH.Eu/h3*1H;/q;;;+3/p-3 |
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| InChI = 1/3ClH.Eu/h3*1H;/q;;;+3/p-3 |
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| SMILES = Cl(Cl)Cl |
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| SMILES = Cl(Cl)Cl |
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| InChIKey = NNMXSTWQJRPBJZ-DFZHHIFOAZ |
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| InChIKey = NNMXSTWQJRPBJZ-DFZHHIFOAZ |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChI = 1S/3ClH.Eu/h3*1H;/q;;;+3/p-3 |
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| StdInChI = 1S/3ClH.Eu/h3*1H;/q;;;+3/p-3 |
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| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChIKey = NNMXSTWQJRPBJZ-UHFFFAOYSA-K |
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| StdInChIKey = NNMXSTWQJRPBJZ-UHFFFAOYSA-K |
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| CASNo = 10025-76-0 |
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| CASNo = 10025-76-0 |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo2_Ref = {{cascite|changed|??}} |
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| CASOther = <br/>13759-92-7 (hexahydrate) |
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| EINECS = 233-040-4 |
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| CASNo2 = 13759-92-7 |
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| CASNo2_Comment = (hexahydrate) |
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| RTECS = LE7525000 |
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| UNII_Ref = {{fdacite|changed|FDA}} |
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| PubChem = 24809 |
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| UNII = LP6WL6W368 |
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| EINECS = 233-040-4 |
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| RTECS = LE7525000 |
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| PubChem = 24809 |
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}} |
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| Section2 = {{Chembox Properties |
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|Section2={{Chembox Properties |
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| Formula = EuCl<sub>3</sub> |
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| Formula = EuCl<sub>3</sub> |
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| MolarMass = 258.323 g/mol<br/>366.41 g/mol (hexahydrate) |
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| MolarMass = 258.323 g/mol<br/>366.41 g/mol (hexahydrate) |
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| Solvent = other solvents |
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| Solvent = other solvents |
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| SolubleOther = Soluble |
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| SolubleOther = Soluble |
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| MeltingPt = 632 °C ''decomp.'' |
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| MeltingPtC = 632 |
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| MeltingPt_notes = decomposes |
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}} |
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| Section3 = {{Chembox Related |
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|Section4={{Chembox Structure |
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| Coordination = Tricapped trigonal prismatic<br />(nine-coordinate) |
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| OtherCpds = ] |
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| CrystalStruct = ] (]), ] |
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| SpaceGroup = P6<sub>3</sub>/m, No. 176 |
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}} |
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| Section4 = {{Chembox Structure |
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|Section5={{Chembox Related |
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| OtherAnions = ] |
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| Coordination = Tricapped trigonal prismatic<br />(nine-coordinate) |
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| OtherCations = ]<br>] |
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| CrystalStruct = ] (]), ] |
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| OtherCompounds = ] |
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| SpaceGroup = P6<sub>3</sub>/m, No. 176 |
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''' Europium(III) chloride''' is an ] with the formula EuCl<sub>3</sub>. The ] compound is a yellow solid. Being ] it rapidly absorbs water to form a white crystalline ], EuCl<sub>3</sub>·6H<sub>2</sub>O, which is colourless. The compound is used in research. |
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==Preparation== |
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Treating ] with aqueous ] produces hydrated europium chloride (EuCl<sub>3</sub>·6H<sub>2</sub>O). This salt cannot be rendered anhydrous by heating. Instead one obtains an ]. |
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Anhydrous EuCl<sub>3</sub> is often prepared by the "] route," starting from either Eu<sub>2</sub>O<sub>3</sub><ref> |
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{{cite book |
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| last =Meyer |
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| first =G. |
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| title =The Ammonium Chloride Route to Anhydrous Rare Earth Chlorides-The Example of YCl<sub>3</sub> |
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| series =Inorganic Syntheses |
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| volume =25 |
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| year =1989 |
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| pages =146–150 |
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| doi =10.1002/9780470132562.ch35 |
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| isbn =978-0-470-13256-2}} |
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</ref><ref name="EdelmannPoremba1997">{{cite book |title=Synthetic Methods of Organometallic and Inorganic Chemistry |volume=VI |last=Edelmann |first=F. T. |author2=Poremba, P. |editor=Herrmann, W. A.|year=1997 |publisher=Georg Thieme Verlag |location=Stuttgart |isbn=3-13-103021-6 }}</ref> or hydrated europium chloride (EuCl<sub>3</sub>·6H<sub>2</sub>O) by heating carefully to 230 °C.<ref>{{cite journal|last=Taylor|first=M.D.|author2=Carter, C.P.|title=Preparation of anhydrous lanthanide halides, especially iodides|journal=Journal of Inorganic and Nuclear Chemistry|volume=24|issue=4|pages=387–391|doi=10.1016/0022-1902(62)80034-7|year=1962}}</ref> These methods produce (NH<sub>4</sub>)<sub>2</sub>: |
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:10 NH<sub>4</sub>Cl + Eu<sub>2</sub>O<sub>3</sub> → 2 (NH<sub>4</sub>)<sub>2</sub> + 6 NH<sub>3</sub> + 3 H<sub>2</sub>O |
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:EuCl<sub>3</sub>·6H<sub>2</sub>O + ''2'' NH<sub>4</sub>Cl → (NH<sub>4</sub>)<sub>2</sub> + 6 H<sub>2</sub>O |
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The pentachloride ] according to the following equation: |
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: (NH<sub>4</sub>)<sub>2</sub> → 2 NH<sub>4</sub>Cl + EuCl<sub>3</sub> |
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The thermolysis reaction proceeds via the intermediary of (NH<sub>4</sub>). |
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==Reactions== |
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Europium(III) chloride is a precursor to other europium compounds. It can be converted to the corresponding ] via ] with ].<ref name="lan">{{cite journal|last=Bradley|first=Donald C.|author2=Ghotra, Joginder S. |author3=Hart, F. Alan |title=Low co-ordination numbers in lanthanide and actinide compounds. Part I. The preparation and characterization of tris{bis(trimethylsilyl)-amido}lanthanides|journal=Journal of the Chemical Society, Dalton Transactions|year=1973|issue=10|pages=1021–1023|doi=10.1039/DT9730001021|url=http://pubs.rsc.org/en/content/articlelanding/1973/dt/dt9730001021}}</ref> The reaction is performed in ] and requires a period at reflux. |
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: EuCl<sub>3</sub> + 3 LiN(SiMe<sub>3</sub>)<sub>2</sub> → Eu(N(SiMe<sub>3</sub>)<sub>2</sub>)<sub>3</sub> + 3 LiCl |
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Eu(N(SiMe<sub>3</sub>)<sub>2</sub>)<sub>3</sub> is a starting material for the more complicated ]es. |
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Reduction with ] gas with heating gives EuCl<sub>2</sub>. The latter has been used to prepare ] compounds of europium(II), such as bis(pentamethylcyclopentadienyl)europium(II) complexes.<ref>{{cite journal | doi = 10.1021/ic50212a031 | year = 1980 | author = Tilley, T. Don | journal = Inorganic Chemistry | volume = 19 | pages = 2999 | title = Divalent lanthanide chemistry. Bis (pentamethylcyclopentadienyl) europium(II) and -ytterbium(II) derivatives: crystal structure of bis (pentamethylcyclopentadienyl) (tetrahydrofuran ytterbium(II) -hemitoluene at 176 K | last2 = Andersen | first2 = Richard A. | last3 = Spencer | first3 = Brock | last4 = Ruben | first4 = Helena | last5 = Zalkin | first5 = Allan | last6 = Templeton | first6 = David H. | issue = 10| url = https://digital.library.unt.edu/ark:/67531/metadc838019/ }}</ref><ref>{{cite journal | doi = 10.1021/om00138a001 | year = 1986 | author = Evans, William J. | journal = Organometallics | volume = 5 | pages = 1285 | title = Synthesis and x-ray crystal structure of bis(pentamethylcyclopentadienyl) complexes of samarium and europium: (C<sub>5</sub>Me<sub>5</sub>)<sub>2</sub>Sm and (C<sub>5</sub>Me<sub>5</sub>)<sub>2</sub>Eu | last2 = Hughes | first2 = Laura A. | last3 = Hanusa | first3 = Timothy P. | issue = 7}}</ref> Europium(III) chloride can be used as a starting point for the preparation of other ] ]s. |
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==Structure== |
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In the solid state, it crystallises in the ] motif. The Eu centres are nine-coordinate.<ref>{{Greenwood&Earnshaw}}</ref> |
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:] |
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{{clear left}} |
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==Bibliography== |
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* {{RubberBible53rd}} |
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==References== |
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<references/> |
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{{Europium compounds}} |
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{{Chlorides}} |
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{{Lanthanide halides}} |
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] |
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] |
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] |