Xenon tetrafluoride

Xenon tetrafluoride

Chembox new
Name = Xenon tetrafluoride
ImageFile = Xenon tetrafluoride.gif
ImageSize = 300px
ImageName = XeF4 crystals. 1962.
ImageFileL1 = Xenon-tetrafluoride-3D-balls.png ImageSizeL1 = 150px
ImageFileR1 = Xenon-tetrafluoride-3D-vdW.pngImageSizeR1 = 150px
IUPACName = Xenon tetrafluoride
OtherNames =
Section1 = Chembox Identifiers
SMILES =
CASNo = 13709-61-0
RTECS =
Section2 = Chembox Properties
Formula = XeF4
MolarMass = 207.2836 g mol−1
Appearance = White solid
Density = 4.040 g cm−3, solid
Solubility =
MeltingPt =
BoilingPt = 117 °C (390 K)
pKa =
pKb =
Viscosity =
Section3 = Chembox Structure
MolShape = square planar
CrystalStruct =
Coordination = D4h
Dipole = 0 D
Section7 = Chembox Hazards
ExternalMSDS =
MainHazards =
FlashPt = ? °C
RPhrases =
SPhrases =
Section8 = Chembox Related
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Xenon tetrafluoride, XeF4, is one of the chemical compounds derived from the noble gas xenon. It was the first discovered noble gas compound containing a noble gas and exactly one other element.cite book|last=Zumdahl|title=Chemistry|isbn=0-618-52844-X|pages=243] It forms by the reaction of Xe and F2 in the ratio of 1 mol Xe to 2 mol F2. [cite journal
author= Claassen, H. H.; Selig, H.; Malm, J. G.
title= Xenon Tetrafluoride
journal= J. Am. Chem. Soc.
volume= 84
issue= 18
pages= 3593
year= 1962
doi= 10.1021/ja00877a042 ] [cite journal |journal= Science
year= 1962
volume= 138
issue= 3537
pages= 136–138
doi= 10.1126/science.138.3537.136
title= Fluorine Compounds of Xenon and Radon
author= C. L. Chernick, H. H. Claassen, P. R. Fields 1, H. H. Hyman, J. G. Malm, W. M. Manning, M. S. Matheson, L. A. Quarterman, F. Schreiner, H. H. Selig, I. Sheft, S. Siegel, E. N. Sloth, L. Stein, M. H. Studier, J. L. Weeks, and M. H. Zirin
pmid= 17818399] The process is exothermic, releasing 251 kJ per mol of Xe.

The structure was determined by NMR spectroscopy and x-ray crystallography in 1963. [cite journal
journal= Science
year= 1963
volume= 140
issue= 3563
pages= 178
doi= 10.1126/science.140.3563.178
title= Xenon Tetrafluoride: Fluorine-19 High-Resolution Magnetic Resonance Spectrum
author= Thomas H. Brown, E. B. Whipple, and Peter H. Verdier
pmid= 17819836] [cite journal
journal= Science
year= 1963:
volume= 139
issue= 3550
pages= 106–107
doi= 10.1126/science.139.3550.106
title= Xenon Tetrafluoride: Crystal Structure
author= James A. Ibers and Walter C. Hamilton
pmid= 17798707] The structure is square planar. This structure is justified by VSEPR theory because xenon has two lone pairs of electrons above and below the plane of the molecule. ["What are the chemical properties of xenon tetrafluoride?" WikiAnswers. Access date 9/17/08. [http://wiki.answers.com/Q/What_are_the_chemical_properties_of_xenon_tetrafluoride link] ]

Xenon tetrafluoride occurs as colorless crystals. It sublimes at 115.7 °C (240.26 °F).

Xenon fluorides are all exergonic and stable at normal temperatures. They do react readily with water, even pulling water from air, so they must be kept in anhydrous conditions.

References

External links

* [http://webbook.nist.gov/cgi/cbook.cgi?ID=C13709610 WebBook page for XeF4]


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Look at other dictionaries:

  • xenon tetrafluoride — [te΄trə flôr′īd΄, te΄trəfloor′īd΄] n. a stable compound, XeF4, prepared by mixing gaseous xenon and fluorine, heating the mixture to 400°C in a nickel container, and then cooling it to form large, colorless crystals …   English World dictionary

  • xenon tetrafluoride — Chem. a colorless, crystalline compound, XeF4, prepared by heating a gaseous mixture of fluorine and xenon. * * * …   Universalium

  • xenon tetrafluoride — Chem. a colorless, crystalline compound, XeF4, prepared by heating a gaseous mixture of fluorine and xenon …   Useful english dictionary

  • Xenon — (PronEng|ˈzɛnɒn [Xenon, entry in the Oxford English Dictionary, prepared by J. A. Simpson and E. S. C. Weiner, vol. 20, second edition, Oxford: Clarendon Press, 1989. ISBN 0 19 861232 X (vol. 20), ISBN 0 19 861186 2 (set.)] or IPAlink en|ˈziːnɒn… …   Wikipedia

  • xenon — /zee non, zen on/, n. Chem. a heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe; at. wt.: 131.30; at. no.: 54. [1898; < Gk xénon, neut. of xénos strange (see… …   Universalium

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  • Xenon fluoride — Three different xenon fluorides are known: *Xenon difluoride, XeF2 *Xenon tetrafluoride, XeF4 *Xenon hexafluoride, XeF6 …   Wikipedia

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  • Dictionary of chemical formulas — This is a list of chemical compounds with chemical formulas and CAS numbers, indexed by formula. This complements alternative listings to be found at list of inorganic compounds, list of organic compounds and inorganic compounds by element. Table …   Wikipedia

  • 13709-61-0 — Tétrafluorure de xénon Tétrafluorure de xénon …   Wikipédia en Français

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