Difference between revisions of "Dichlorine monoxide"
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| + | {{chembox | ||
| + | | IUPACName = Oxygen dichloride{{#tag:ref|Although oxygen is more [[Electronegativity|electronegative]] than chlorine on the normal numerical scales,<ref>{{Allred (1961)}}.</ref> it appears after the [[halogen]]s on the conventional electronegativity series used in inorganic nomenclature.<ref>{{RedBook2005|page=260}}.</ref> Hence, OCl<sub>2</sub> is considered a chloride of oxygen, and not an oxide of chlorine, for nomenclature purposes.|group=note}} | ||
| + | | OtherNames = Chlorine(I) oxide<br/>Hypochlorous anhydride<br/>Dichlorooxidane<br/>Dichloridooxygen | ||
| + | | Section1 = {{Chembox Identifiers | ||
| + | | ChemSpiderID = 23048 | ||
| + | | InChI=1/Cl2O/c1-3-2 | ||
| + | | InChIKey = RCJVRSBWZCNNQT-UHFFFAOYAA | ||
| + | | StdInChI=1S/Cl2O/c1-3-2 | ||
| + | | StdInChIKey = RCJVRSBWZCNNQT-UHFFFAOYSA-N | ||
| + | | CASNo = 7791-21-1 | ||
| + | | EINECS = 232-243-5 | ||
| + | }} | ||
| + | | Section2 = {{Chembox Properties | ||
| + | | Reference = <ref name="G&E">{{Greenwood&Earnshaw1st|pages=989–90}}.</ref><ref>{{RubberBible62nd|page=B-93}}.</ref> | ||
| + | | Formula = Cl<sub>2</sub>O | ||
| + | | MolarMass = 86.905 g mol<sup>−1</sup> | ||
| + | | MeltingPt = −120.6 °C (152.6 K) | ||
| + | | BoilingPt = 2.0 °C (275.2 K) | ||
| + | | Density = | ||
| + | | Appearance = yellow-brown gas | ||
| + | }} | ||
| + | | Section3 = {{Chembox Structure | ||
| + | | Reference = <ref name="v1">{{citation | first1 = Yunjie | last1 = Xu | first2 = A. R. W. | last2 = McKellar | first3 = James B. | last3 = Burkholder | first4 = J. J. | last4 = Orlando | title = High-Resolution Infrared Spectrum of the ν<sub>1</sub> and ν<sub>3</sub> Bands of Dichlorine Monoxide, Cl<sub>2</sub>O | journal = J. Mol. Spectrosc. | volume = 175 | issue = 1 | pages = 68–72 | year = 1996 | doi = 10.1006/jmsp.1996.0010}}.</ref> | ||
| + | | MolShape = bent: ''r''(Cl–O) = 170.13 pm, ''θ''(Cl–O–Cl) = 110.89° | ||
| + | }} | ||
| + | | Section4 = {{Chembox Thermochemistry | ||
| + | | Reference = <ref>{{NIST chemistry | name = Dichlorine monoxide | id = 1S/Cl2O/c1-3-2 | accessdate = 2010-12-31}}.</ref> | ||
| + | | DeltaHf = +87.86 kJ mol<sup>−1</sup> | ||
| + | | Entropy = 267.89 J K<sup>−1</sup> mol<sup>−1</sup> | ||
| + | }} | ||
| + | | Section8 = {{Chembox Related | ||
| + | | OtherCations = [[Difluorine monoxide]]<br/>[[Dibromine monoxide]] | ||
| + | | OtherFunctn = [[Chlorine dioxide]]<br/>[[Dichlorine hexaoxide]]<br/>[[Dichlorine heptaoxide]] | ||
| + | | Function = [[oxides of chlorine]] | ||
| + | | OtherCpds = [[Hypochlorous acid]] | ||
| + | }} | ||
| + | }} | ||
'''Dichlorine monoxide''', Cl<sub>2</sub>O, is a binary compound of [[oxygen]] and [[chlorine]]. | '''Dichlorine monoxide''', Cl<sub>2</sub>O, is a binary compound of [[oxygen]] and [[chlorine]]. | ||
| Line 10: | Line 47: | ||
==External links== | ==External links== | ||
{{wikipedia|Dichlorine monoxide}} | {{wikipedia|Dichlorine monoxide}} | ||
| + | *[http://www.webelements.com/compounds/chlorine/dichlorine_oxide.html WebElements] | ||
[[Category:Chlorine compounds]] | [[Category:Chlorine compounds]] | ||
Latest revision as of 10:57, 1 January 2011
| Dichlorine monoxide | |
|---|---|
| IUPAC name | Oxygen dichloride[note 1] |
| Other names | Chlorine(I) oxide Hypochlorous anhydride Dichlorooxidane Dichloridooxygen |
| Identifiers | |
| InChI | InChI=1/Cl2O/c1-3-2 |
| InChIKey | RCJVRSBWZCNNQT-UHFFFAOYAA |
| Standard InChI | InChI=1S/Cl2O/c1-3-2 |
| Standard InChIKey | RCJVRSBWZCNNQT-UHFFFAOYSA-N |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| Properties[3][4] | |
| Chemical formula | Cl2O |
| Molar mass | 86.905 g mol−1 |
| Appearance | yellow-brown gas |
| Melting point |
−120.6 °C (152.6 K) |
| Boiling point |
2.0 °C (275.2 K) |
| Structure[5] | |
| Molecular geometry | bent: r(Cl–O) = 170.13 pm, θ(Cl–O–Cl) = 110.89° |
| Thermochemistry[6] | |
| Std enthalpy of formation ΔfH |
+87.86 kJ mol−1 |
| Standard molar entropy S |
267.89 J K−1 mol−1 |
| Related compounds | |
| Other cations | Difluorine monoxide Dibromine monoxide |
| Other oxides of chlorine | Chlorine dioxide Dichlorine hexaoxide Dichlorine heptaoxide |
| Other compounds | Hypochlorous acid |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Dichlorine monoxide, Cl2O, is a binary compound of oxygen and chlorine.
Notes and references
Notes
- ↑ Although oxygen is more electronegative than chlorine on the normal numerical scales,[1] it appears after the halogens on the conventional electronegativity series used in inorganic nomenclature.[2] Hence, OCl2 is considered a chloride of oxygen, and not an oxide of chlorine, for nomenclature purposes.
References
- ↑ Allred, A. L. Electronegativity values from thermochemical data. J. Inorg. Nucl. Chem. 1961, 17 (3–4), 215–21. DOI: 10.1016/0022-1902(61)80142-5.
- ↑ Nomenclature of Inorganic Chemistry; IUPAC Recommendations 2005; Royal Society of Chemistry: Cambridge, 2005; p 260. ISBN 0-85404-438-8, <http://www.iupac.org/publications/books/rbook/Red_Book_2005.pdf>.
- ↑ Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; pp 989–90. ISBN 0-08-022057-6.
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-93. ISBN 0-8493-0462-8.
- ↑ Xu, Yunjie; McKellar, A. R. W.; Burkholder, James B.; Orlando, J. J. High-Resolution Infrared Spectrum of the ν1 and ν3 Bands of Dichlorine Monoxide, Cl2O. J. Mol. Spectrosc. 1996, 175 (1), 68–72. DOI: 10.1006/jmsp.1996.0010.
- ↑ Dichlorine monoxide. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/Cl2O/c1-3-2>. (accessed 31 December 2010).
External links
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See also the corresponding article on Wikipedia. |
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