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{{chembox |
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{{chembox |
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| verifiedrevid = 368374111 |
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| Name = Tungsten(VI) oxytetrachloride |
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| verifiedrevid = 433813730 |
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| Name = Tungsten(VI) oxytetrachloride |
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| ImageFile = WOCl4.png |
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| ImageFile1 = WOCl4.png |
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| ImageSize = 160px |
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| ImageSize1 = 160px |
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| ImageFile2 = WOCl4.jpg |
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| ImageName = Tungsten oxytetrachloride |
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| ImageSize2 = 160px |
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| OtherNames = |
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| ImageName = Tungsten oxytetrachloride |
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| Section1 = {{Chembox Identifiers |
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| OtherNames = Tungsten(IV) chloride oxide |
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| CASNo = 13520-78-0 |
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|Section1={{Chembox Identifiers |
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| CASNo_Ref = {{cascite|correct|??}} |
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| CASNo = 13520-78-0 |
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| ChemSpiderID = 21171360 |
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| EC_number = 236-863-7 |
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| PubChem = 19596810 |
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| InChI = 1S/4ClH.O.W/h4*1H;;/q;;;;;+4/p-4 |
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| InChIKey =LQNAFXBTXJHEAX-UHFFFAOYSA-J |
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| SMILES = O=(Cl)(Cl)(Cl)Cl |
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| Section2 = {{Chembox Properties |
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|Section2={{Chembox Properties |
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| Formula = WOCl<sub>4</sub> |
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| Formula = WOCl<sub>4</sub> |
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| MolarMass = 341.65 g/mol |
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| MolarMass = 341.651 g/mol |
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| Appearance = red crystals |
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| Appearance = red crystals |
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| Density = 11.92 g/cm³, solid |
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| Density = 11.92 g/cm<sup>3</sup> |
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| MeltingPt = 211 °C |
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| MeltingPtC = 211 |
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| BoilingPt = 227.55 °C |
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| BoilingPtC = 227.55 |
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| Solubility = reacts |
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| Solubility = reacts |
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| SolubleOther = soluble in ] and ] |
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|Section7={{Chembox Hazards |
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| GHS_ref=<ref>{{cite web |title=Tungsten tetrachloride oxide |url=https://pubchem.ncbi.nlm.nih.gov/compound/19596810#section=Safety-and-Hazards |website=pubchem.ncbi.nlm.nih.gov |access-date=12 December 2021 |language=en}}</ref> |
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| GHSPictograms = {{GHS07}} |
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| GHSSignalWord = Warning |
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| HPhrases = {{H-phrases|315|319|335}} |
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| PPhrases = {{P-phrases|261|264|271|280|302+352|304+340|305+351+338|312|321|332+313|337+313|362|403+233|405|501}} |
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| Section3 = {{Chembox Structure |
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| Section8 = {{Chembox Related |
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| OtherAnions = ]<br />] |
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| CrystalStruct = |
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| OtherCations = |
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| ] |
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| reacts with ]<br /> soluble in ], ] |
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| ] |
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| 131.714 J/g |
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| ] |
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| 198.449 J/g |
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| Section7 = {{Chembox Hazards |
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| EUClass = not listed |
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'''Tungsten(VI) oxytetrachloride''' is the ] with the ] ]]]. This diamagnetic solid is used to prepare other ] of tungsten. The orange-coloured compound is soluble in nonpolar solvents but it reacts with alcohols and water and forms ]s with Lewis bases. The solid consists of weakly associated square pyramidal monomers. |
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'''Tungsten(VI) oxytetrachloride''' is the ] with the ] ]]]. This diamagnetic solid is used to prepare other ] of tungsten. The red crystalline compound is soluble in nonpolar solvents but it reacts with alcohols and water and forms ]s with Lewis bases.{{citation needed|date=November 2023}} |
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==Structure== |
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WOCl<sub>4</sub> is prepared from ]:<ref>{{cite journal | isbn = 0-471-81873-9 | author = Nielson, A. J. | title = Inorganic Syntheses | journal = ] | year = 1985 | volume = 23 | pages = 195–198 | publisher = Wiley | location = New York | doi = 10.1002/9780470132548.ch41 | last2 = Andersen | first2 = R. A. | chapter = Tungsten and Molybdenum Tetrachloride Oxides | series = Inorganic Syntheses}}</ref> |
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:WO<sub>3</sub> + 2 ] → WOCl<sub>4</sub> + 2 ] |
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The solid consists of weakly associated square pyramidal monomers.<ref>{{cite journal | last1 = Hess | first1 = H. | last2 = Hartung | first2 = H. | year = 1966 | title = Die Kristallstruktur von Wolframoxidchlorid WOCl<sub>4</sub> und Wolframoxidbromid WOBr<sub>4</sub> | journal = Z. Anorg. Allg. Chem. | volume = 34 | issue = 3–4| pages = 157–166 | doi =10.1002/zaac.19663440306}}</ref> The compound is classified as an ]. |
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==Synthesis and reactions== |
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WOCl<sub>4</sub> is prepared from ]:<ref>{{cite book | last1 = Nielson | first1 = A. J. | chapter = Tungsten and Molybdenum Tetrachloride Oxides | title = Inorganic Syntheses |series=<!--Inorganic Syntheses--> | volume = 23 | pages = 195–198| doi =10.1002/9780470132548.ch41 | date = 2007 | isbn = 9780470132548 }}</ref> |
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:WO<sub>3</sub> + 2 ] → WOCl<sub>4</sub> + 2 ] |
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:WCl<sub>6</sub> + (Me<sub>3</sub>Si)<sub>2</sub>O → WOCl<sub>4</sub> + 2 Me<sub>3</sub>SiCl |
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It is "difficult to prepare by other means."<ref>{{cite book|url=https://archive.org/details/cftri.2662nonaqueoussolven0000ludw/page/224/|page=224|title=Non-aqueous solvents|first1=Ludwig F.|last1=Audrieth|first2=Jacob|last2=Kleinberg|publisher=John Wiley & Sons|location=New York|year=1953|lccn=52-12057}}</ref> |
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WOCl<sub>4</sub> is Lewis acidic. It is a precursor to catalysts used for polymerization of ]s.<ref>{{cite journal | last1 = Hayano | first1 = S. | last2 = Masuda | first2 = T. | year = 1999 | title = Living Polymerization of acetylene by WOCl<sub>4</sub>-Based Catalysts such as WOCl<sub>4</sub>-n-Bu<sub>4</sub>Sn-t-BuOH (1:1:1) | journal = Macromolecules | volume = 32 | pages = 7344–7348 | doi =10.1002/zaac.19663440306}}</ref> |
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==References== |
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==References== |
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