Xenon tetrafluoride

From Wikipedia, the free encyclopedia

Xenon tetrafluoride
XeF4 crystals. 1962.
IUPAC name Xenon tetrafluoride
Identifiers
CAS number [13709-61-0]
Properties
Molecular formula XeF4
Molar mass 207.2836 g mol−1
Appearance White solid
Density 4.040 g cm−3, solid
Boiling point

117 °C (390 K)
Structure
Coordination
geometry		 D4h
Molecular shape square planar
Dipole moment 0 D
Hazards
Flash point  ? °C
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Xenon tetrafluoride, XeF4, is one of the chemical compounds derived from the noble gas xenon. It was the first discovered binary compound containing a noble gas[1]. It forms by the reaction of Xe and F2 in the ratio of 1 mol Xe to 2 mol F2.[2][3]The process is exothermic, releasing 251 kJ per mol of Xe[1]. It occurs as colorless crystals. The structure was determined by NMR spectroscopy and x-ray crystallography in 1963.[4][5]

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.

[edit] References

  1. ^ a b Zumdahl. Chemistry, 243. ISBN 0-618-52844-X. 
  2. ^ Claassen, H. H.; Selig, H.; Malm, J. G. (1962). "Xenon Tetrafluoride". J. Am. Chem. Soc. 84 (18): 3593. doi:10.1021/ja00877a042. 
  3. ^ 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 (1962). "Fluorine Compounds of Xenon and Radon". Science 138 (3537): 136 - 138. doi:10.1126/science.138.3537.136. 
  4. ^ Thomas H. Brown, E. B. Whipple, and Peter H. Verdier (1963). "Xenon Tetrafluoride: Fluorine-19 High-Resolution Magnetic Resonance Spectrum". Science 140 (3563): 178. doi:10.1126/science.140.3563.178. 
  5. ^ James A. Ibers and Walter C. Hamilton (1963:). "Xenon Tetrafluoride: Crystal Structure". Science 139 (3550): 106 - 107. doi:10.1126/science.139.3550.106.