rhenium trioxide chloride
{{Chembox
| ImageFile = ReO3ClTd.svg
| ImageSize = 120
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| IUPACName =
| OtherNames = Rhenium oxychloride
|Section1={{Chembox Identifiers
| CASNo = 42246-25-3
| CASNo_Comment =
| CASNo1 =
| CASNo1_Comment =
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| StdInChI=
| StdInChIKey=YDGWOHYNESLUAQ-UHFFFAOYSA-M
| SMILES = O=[Re](=O)(=O)Cl
}}
|Section2={{Chembox Properties
| Re = 1|O=3|Cl=1
| Appearance = colorless liquid
| Density = 4.665 g/cm3 (-100 °C)
| MeltingPtC = 4.5
| MeltingPt_notes =
| BoilingPtC = 113
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| Solubility = }}
|Section3={{Chembox Hazards
| MainHazards =
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Rhenium trioxide chloride is an inorganic compound with the formula {{chem2|ReO3Cl}}. It is a colorless, distillable, diamagnetic liquid. It is a rhenium oxychloride.{{Greenwood&Earnshaw2nd|page=1052}} The material is used as a reagent in the preparation of rhenium compounds.
Synthesis and reactions
Rhenium trioxide chloride can be prepared by chlorination of rhenium trioxide:{{cite book|author1=O. Glemser|author2=R. Sauer|chapter=Rhenium (VII) Oxychloride|title=Handbook of Preparative Inorganic Chemistry, 2nd Ed. |editor=G. Brauer|publisher=Academic Press|year=1963|place=NY, NY|volume=2pages=1480}}
:{{chem2|2 ReO3 + Cl2 -> 2 ReO3Cl}}
With Lewis bases (L), rhenium trioxide chloride reacts to form adducts with the formula {{chem2|ReO3ClL2}}.{{cite journal |doi=10.1002/cber.19941270108 |title=Chlorotrioxorhenium. Neue Synthesen, Reaktionen, und Derivate |year=1994 |last1=Kühn |first1=Fritz E. |last2=Romão |first2=Carlos C. |last3=Kleine |first3=Matthias |last4=Mink |first4=Janos |last5=Herrmann |first5=Wolfgang A. |journal=Chemische Berichte |issue=127 |pages=47-57 }}{{cite journal |doi=10.1039/b616495a |title=Rhenium Oxohalides: Synthesis and Crystal Structures of ReO3Cl(THF)2, ReOCl4(THF), Re2O3Cl6(THF)2, and Re2O3Cl6(H2O)2 |year=2007 |last1=Noh |first1=Wontae |last2=Girolami |first2=Gregory S. |journal=Dalton Transactions |issue=6 |pages=674–679 |pmid=17268601 }}
The compound hydrolyzes readily to give perrhenic acid.
Structure
The compound adopts a tetrahedral structure with Re-O and Re-Cl bond distances of 1.71 and 2.22 Å.{{cite journal |doi=10.1002/zaac.200600186 |title=MnO3Cl, Isolation and Crystal Structure |year=2006 |last1=Spandl |first1=Johann |last2=Supeł |first2=Joanna |last3=Drews |first3=Thomas |last4=Seppelt |first4=Konrad |journal=Zeitschrift für Anorganische und Allgemeine Chemie |volume=632 |issue=14 |pages=2222–2225 }} In contrast rhenium trioxide fluoride ({{chem2|ReO3F}}) is polymeric with octahedral Re centers.