Rhenium(VII) oxide 5296633 216829120 2008-06-03T12:21:52Z Rifleman 82 1255637 remove null image {{Chembox new | Name = Rhenium(VII) oxide | ImageFile = <!-- | ImageSize = 200px --> | ImageName = Rhenium(VII) oxide | OtherNames = Rhenium heptoxide | Name = Related | Section1 = {{Chembox Identifiers | CASNo = 1314-68-7 }} | Section2 = {{Chembox Properties | Formula = O<sub>7</sub>Re<sub>2</sub> | MolarMass = 484.410 g/mol | Appearance = yellow crystalline powder | Density = 6.103 g/cm<sup>3</sup>, solid | MeltingPt = 360 °C | BoilingPt = sublimes }} | Section7 = {{Chembox Hazards | EUClass = not listed }} | Section8 = {{Chembox Other | OtherCpds = [[Manganese(VII) oxide]]; [[technetium(VII) oxide]]; [[perrhenic acid]] }} }} '''Rhenium(VII) oxide''' is the [[chemical compound]] with the formula [[Rhenium|Re<sub>2</sub>]][[Oxygen|O<sub>7</sub>]]. It is the [[anhydride]] of the hypothetical acid (HOReO<sub>3</sub>). [[Perrhenic acid]], Re<sub>2</sub>O<sub>7</sub><nowiki>&middot;</nowiki>2H<sub>2</sub>O, however is closely related structurally to Re<sub>2</sub>O<sub>7</sub>. Solid Re<sub>2</sub>O<sub>7</sub> is polymeric consisting, unusually, of the metal centers in two coordination environments - octahedral and tetrahedral. Gaseous Re<sub>2</sub>O<sub>7</sub> is however molecular, consisting of a pair of ReO<sub>4</sub> tetrahedra that share a corner.<ref>Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6.</ref> Re<sub>2</sub>O<sub>7</sub> is a precursor to methyl rhenium trioxide ("MTO"), a catalyst for oxidations.<ref>{{cite journal | author = W. A. Herrmann and F. E. Kuhn | title = Organorhenium Oxides | year = 1997 | journal = [[Acc. Chem. Res.]] | volume = 30 | issue = 4 | pages = 169–180 | doi=10.1021/ar9601398}}</ref> ==References== {{reflist}} [[Category:Oxides]] [[Category:Rhenium compounds]] [[Category:Acidic oxides]] {{inorganic-compound-stub}} [[de:Rhenium(VII)-oxid]] [[sv:Rhenium(VII)oxid]] [[zh:七氧化二铼]]