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Xenon tetrafluoride

Xenon tetrafluoride


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
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 few chemical compounds involving a noble gas. It was the first discovered binary compound containing a noble gas. It is formed by the reaction of Xe and F₂ in the ratio of 1 mol Xe to 2 mol F₂. The process is exothermic, releasing 251 kJ per mol of Xe. It occurs as colorless crystals.

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It sublimes at 115.7 °C (240.26 °F).

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