| 词条 | Xenon dioxide |
| 释义 |
| Name = Xenon dioxide | ImageFile = Xenon-dioxide-2D.png | ImageSize = 250px | IUPACName = xenon dioxide |Section1={{Chembox Identifiers | CASNo = |Section2={{Chembox Properties | Formula = XeO2 | MolarMass = 163.29 g/mol | Appearance = yellow solid[1] | Density = | Solubility = | MeltingPt = | BoilingPt = | pKa = |Section3={{Chembox Structure | MolShape = Bent | Dipole = |Section4={{Chembox Thermochemistry | DeltaHf = | Entropy = |Section7={{Chembox Hazards | EUClass = |Section8={{Chembox Related | OtherCompounds = Xenon trioxide Xenon tetroxide }}Xenon dioxide, or xenon(IV) oxide, is a compound of xenon and oxygen with formula XeO2, which was synthesized in 2011. It is synthesized at 0 °C by hydrolysis of xenon tetrafluoride (with 2.00 mol/L H2SO4).[1] Structure{{chem|XeO|2}} has an extended (chain or network) structure in which xenon and oxygen have coordination numbers of four and two respectively. The geometry at xenon is square planar, consistent with VSEPR theory for four ligands and two lone pairs (or AX4E2 in the notation of VSEPR theory).In addition, the existence of an XeO2 molecule was predicted by an ab initio quantum chemistry method several years earlier by Pyykkö and Tamm, but these authors did not consider an extended structure.[2] Properties{{chem|XeO|2}} is a yellow-orange solid.[3] It is an unstable compound, with a half-life of about two minutes, disproportionating into {{chem|XeO|3}} and xenon gas. Its structure and identity was confirmed by cooling it to −78 °C so that Raman spectroscopy could be performed before it decomposed.[4]References1. ^{{cite journal | doi = 10.1021/ja110618g | title = Synthesis of the Missing Oxide of Xenon, {{chem|XeO|2}}, and Its Implications for Earth’s Missing Xenon | year = 2011 | last1 = Brock | first1 = David S. | last2 = Schrobilgen | first2 = Gary J. | journal = Journal of the American Chemical Society | volume = 133 | issue = 16 | pages = 6265–6269 | pmid = 21341650 }} {{Xenon compounds}}{{Noble gas compounds}}2. ^{{cite journal|last=Pyykkö|first=Pekka|author2=Tamm, Toomas |title=Calculations for XeOn(n = 2−4): Could the Xenon Dioxide Molecule Exist?|journal=The Journal of Physical Chemistry A|date=1 April 2000|volume=104|issue=16|pages=3826–3828|doi=10.1021/jp994038d}} 3. ^{{cite magazine |url=https://eic.rsc.org/soundbite/xenon-dioxide/2021269.article |last=Cotton |first=Simon |title=Xenon dioxide | department=Soundbite | date=1 May 2011 | publisher=Royal Society of Chemistry |magazine=Education in Chemistry |volume=48 |issue=3 |page=69 | accessdate=2012-05-18}} 4. ^1 {{cite web | title = Xenon Dioxide May Solve One of Earth's Mysteries | url = http://www.accn.ca/index.php?ci_id=2583&la_id=1 | author = Tyler Irving | publisher = L’Actualité chimique canadienne (Canadian Chemical News) | date = May 2011 | accessdate=2012-05-18}} 3 : Oxides|Xenon compounds|Inorganic compounds |
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