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{{chembox {{Chembox
| Verifiedfields = changed
⚫ | verifiedrevid = 414434206
| Watchedfields = changed
⚫ | ImageFile = ReO2structure.jpg
⚫ | verifiedrevid = 437313373
⚫ | ImageFile = Rhenium dioxide.jpg
| ImageFile1 = Rutile-unit-cell-3D-balls.png
| ImageCaption1 = {{Color box|#BFC3C6|border=darkgray}} ] {{Color box|#ee2010|border=darkgray}} ]
| IUPACName = Rhenium(IV) oxide | IUPACName = Rhenium(IV) oxide
| OtherNames = Rhenium dioxide | OtherNames = Rhenium dioxide
| Section1 = {{Chembox Identifiers |Section1={{Chembox Identifiers
| Abbreviations = | Abbreviations =
| CASNo_Ref = {{cascite|correct|??}}
| CASNo = 12036-09-8 | CASNo = 12036-09-8
| EINECS = | EINECS = 234-839-0
| PubChem = 24861043 | PubChem = 82847
| SMILES = | InChI = 1S/2O.Re
| InChI =
| RTECS = | RTECS =
| MeSHName = | MeSHName =
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| KEGG_Ref = {{keggcite|correct|kegg}} | KEGG_Ref = {{keggcite|correct|kegg}}
| KEGG = | KEGG =
| SMILES = O==O
| ATCCode_prefix =
⚫ }}
| ATCCode_suffix =
⚫ |Section2={{Chembox Properties
| ATC_Supplemental =}}
⚫ | Section2 = {{Chembox Properties
| Formula = ReO<sub>2</sub> | Formula = ReO<sub>2</sub>
| MolarMass = 218.206 g/mol | MolarMass = 218.206 g/mol
| Appearance = gray ] | Appearance = gray ]
| Density = 11.4 g/cm³<ref name="chem"> | Density = 11.4 g/cm<sup>3</sup><ref name="chem">
{{cite book | last = Lide {{cite book | last = Lide
| first = David R. | first = David R.
| year = 1998 | year = 1998
| title = Handbook of Chemistry and Physics | title = Handbook of Chemistry and Physics
| edition = 87 | edition = 87
| publisher = CRC Press | publisher = CRC Press
| isbn = 0-8493-0594-2 | pages = 484 | isbn = 0-8493-0594-2 | page = 484
| url = http://books.google.com/books?id=lFjg0L-uOxoC&pg=PT869&dq=%22Rhenium(IV)+oxide%22&as_brr=3&sig=fsZDL9bcqaIqe62fh0SCfRFxxb0#PPT869,M1 | url = https://books.google.com/books?id=lFjg0L-uOxoC&q=%22Rhenium(IV)+oxide%22&pg=PT869
| accessdate = 2008-06-05 | accessdate = 2008-06-05
}}</ref> }}</ref>
| MeltingPt = decomposes at 1000°C<ref name="comp"> | MeltingPt = decomposes at 1000&nbsp;°C<ref name="comp">
{{cite book {{cite book
| last = Perry | last1 = Perry
| first = Dale L. | first1 = Dale L.
| last2 = Phillips | last2 = Phillips
| first2 = Sidney L. | first2 = Sidney L.
| year = 1995 | year = 1995
| title = Handbook of Inorganic Compounds | title = Handbook of Inorganic Compounds
| publication-place = San Diego | location = San Diego
| publisher = CRC Press | publisher = CRC Press
| isbn = 0-8493-8671-3 | pages = 328 | isbn = 0-8493-8671-3 | page = 328
| url = http://books.google.com/books?id=0fT4wfhF1AsC&pg=PA328&dq=%22Rhenium(IV)+oxide%22&as_brr=3&sig=OfqQtu4StQ6Vv__h24BD2UrocQU | url = https://books.google.com/books?id=0fT4wfhF1AsC&q=%22Rhenium(IV)+oxide%22&pg=PA328
| accessdate = 2008-06-05 | accessdate = 2008-06-05
}}</ref> }}</ref>
| BoilingPt = | BoilingPt =
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| pKa = | pKa =
| pKb = | pKb =
| MagSus = +44.0·10<sup>−6</sup> cm<sup>3</sup>/mol
⚫ }}
⚫ }}
| Section3 = {{Chembox Structure |Section3={{Chembox Structure
| CrystalStruct = Orthorohmbic, ] | CrystalStruct = Orthorohmbic, ]
| SpaceGroup = Pbcn, No. 60 | SpaceGroup = Pbcn, No. 60
⚫ }}
}}
| Section7 = {{Chembox Hazards |Section7={{Chembox Hazards
| ExternalMSDS = | ExternalSDS =
| EUClass =
| EUIndex =
| MainHazards = | MainHazards =
| NFPA-H = 1 | NFPA-H = 1
| NFPA-F = 0 | NFPA-F = 0
| NFPA-R = 0 | NFPA-R = 0
| NFPA-O = | NFPA-S =
| RPhrases = | HPhrases =
| SPhrases = | PPhrases =
| RSPhrases = | GHS_ref =
| FlashPt = | FlashPt =
| Autoignition = | AutoignitionPt =
| ExploLimits = | ExploLimits =
| PEL = }} | PEL =
}}
| Section8 = {{Chembox Related |Section8={{Chembox Related
| OtherAnions = ]<br />]<br />] | OtherAnions = ]<br />]<br />]
| OtherCations = ]<br />]<br /> | OtherCations = ]<br />]
}} }}
}} }}


'''Rhenium(IV) oxide''' or '''rhenium dioxide''' is the ] composed of ] and ] with the ] ReO<sub>2</sub>. This gray to black crystalline ] is a laboratory reagent that can be used as a ]. It form ]s with alkaline ] and ]s.<ref>http://www.aaamolybdenum.com/RheniumDioxide.html</ref> It disproportionates when heated.<ref>http://www.chemyq.com/En/xz/xz4/34495anufv.htm</ref> '''Rhenium(IV) oxide''' or '''rhenium dioxide''' is the ] with the ] ]O<sub>2</sub>. This gray to black crystalline ] is a laboratory reagent that can be used as a ]. It adopts the ] structure.

==Synthesis and reactions==
It forms via ]:<ref>G. Glemser "Rhenium (IV) Oxide" Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1480.</ref>
:2 Re<sub>2</sub>O<sub>7</sub> + 3 Re → 7 ReO<sub>2</sub>
Single crystals are obtained by ], using ] as the transporting agent.:<ref>{{cite book | last1 = Rogers | first1 = D. B. | last2 = Butler | first2 = S. R. | last3 = Shannon | first3 = R. D. | year = 1972 | title = Single Crystals of Transition-Metal Dioxides | series = Inorganic Syntheses | volume = XIII | pages = 135–145 | doi = 10.1002/9780470132449.ch27 | isbn = 9780470131725 }}</ref>
: ReO<sub>2</sub> + I<sub>2</sub> {{eqm}} ReO<sub>2</sub>I<sub>2</sub>

At high temperatures it undergoes ]:
:7{{nbsp}}ReO<sub>2</sub> → 2{{nbsp}}Re<sub>2</sub>O<sub>7</sub> + 3{{nbsp}}Re

It forms ]s with alkaline ] and ]s.<ref>{{cite web |url=http://www.aaamolybdenum.com/RheniumDioxide.html |title=RHENIUM DIOXIDE - Manufacturer |publisher=Aaamolybdenum.com |accessdate=2012-08-06 |url-status=dead |archiveurl=https://web.archive.org/web/20030209232809/http://www.aaamolybdenum.com/RheniumDioxide.html |archivedate=2003-02-09 }}</ref> In molten sodium hydroxide it forms sodium rhenate:<ref>G. Glemser "Sodium Rhenate (IV)" Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1483.</ref>

: 2{{nbsp}}NaOH + ReO<sub>2</sub> → Na<sub>2</sub>ReO<sub>3</sub> + H<sub>2</sub>O


==References== ==References==
{{reflist}} {{reflist}}

{{Rhenium compounds}} {{Rhenium compounds}}
{{Oxides}}
{{inorganic-compound-stub}}


{{DEFAULTSORT:Rhenium(Iv) Oxide}} {{DEFAULTSORT:Rhenium(Iv) Oxide}}
] ]
] ]

]

Latest revision as of 08:22, 22 August 2024

Rhenium(IV) oxide

  Re   O
Names
IUPAC name Rhenium(IV) oxide
Other names Rhenium dioxide
Identifiers
CAS Number
3D model (JSmol)
ECHA InfoCard 100.031.659 Edit this at Wikidata
EC Number
  • 234-839-0
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2O.Re
SMILES
  • O==O
Properties
Chemical formula ReO2
Molar mass 218.206 g/mol
Appearance gray orthorhombic crystals
Density 11.4 g/cm
Melting point decomposes at 1000 °C
Solubility in water insoluble
Solubility in alkali insoluble
Magnetic susceptibility (χ) +44.0·10 cm/mol
Structure
Crystal structure Orthorohmbic, oP12
Space group Pbcn, No. 60
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1 0 0
Safety data sheet (SDS) Aldrich MSDS
Related compounds
Other anions Rhenium(VII) oxide
Rhenium(III) oxide
Rhenium(III) chloride
Other cations manganese(IV) oxide
Technetium(IV) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

Rhenium(IV) oxide or rhenium dioxide is the inorganic compound with the formula ReO2. This gray to black crystalline solid is a laboratory reagent that can be used as a catalyst. It adopts the rutile structure.

Synthesis and reactions

It forms via comproportionation:

2 Re2O7 + 3 Re → 7 ReO2

Single crystals are obtained by chemical transport, using iodine as the transporting agent.:

ReO2 + I2 ⇌ ReO2I2

At high temperatures it undergoes disproportionation:

7 ReO2 → 2 Re2O7 + 3 Re

It forms rhenates with alkaline hydrogen peroxide and oxidizing acids. In molten sodium hydroxide it forms sodium rhenate:

2 NaOH + ReO2 → Na2ReO3 + H2O

References

  1. Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). CRC Press. p. 484. ISBN 0-8493-0594-2. Retrieved 2008-06-05.
  2. Perry, Dale L.; Phillips, Sidney L. (1995). Handbook of Inorganic Compounds. San Diego: CRC Press. p. 328. ISBN 0-8493-8671-3. Retrieved 2008-06-05.
  3. G. Glemser "Rhenium (IV) Oxide" Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1480.
  4. Rogers, D. B.; Butler, S. R.; Shannon, R. D. (1972). Single Crystals of Transition-Metal Dioxides. Inorganic Syntheses. Vol. XIII. pp. 135–145. doi:10.1002/9780470132449.ch27. ISBN 9780470131725.
  5. "RHENIUM DIOXIDE - Manufacturer". Aaamolybdenum.com. Archived from the original on 2003-02-09. Retrieved 2012-08-06.
  6. G. Glemser "Sodium Rhenate (IV)" Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1483.
Rhenium compounds
Rhenium(0)
Organorhenium(0)
Rhenium(I)
Organorhenium(I)
Rhenium(II)
Rhenium(III)
Rhenium(IV)
Rhenium(V)
Rhenium(VI)
Rhenium(VII)
Perrhenates
  • Re2O7(OH2)2
  • NH4ReO4
  • NaReO4
  • AgReO4
    • Organorhenium(VII)
    Oxides
    Mixed oxidation states
    +1 oxidation state
    +2 oxidation state
    +3 oxidation state
    +4 oxidation state
    +5 oxidation state
    +6 oxidation state
    +7 oxidation state
    +8 oxidation state
    Related
    Oxides are sorted by oxidation state. Category:Oxides
    Categories: