CHEMISTRY TEXTBOOK

7.13.1 Xenon fluorides

a. Preparation of Xenon Fluorides : Xenon
fluorides are generally prepared by direct
reaction of xenon and fluorine in different
ratios and conditions, such as temperature,
electric discharge and photochemical reaction.

i. Xe + F 2 Ni tube, 400sealed (^0) C XeF 2
iv. Xe + F 2 Ni tube, 400
(^0) C
5-6 atm XeF 4
1 : 5
v. Xe + 2F 2 electric discharge-80 (^0) C XeF 4
vi. Xe + 3F 2 electric dischargelow temp. XeF 6
b. Important chemical reactions of XeF 2
i. Hydrolysis : XeF 2 undergoes hydrolysis
to form HF
2XeF 2 + 2H 2 O 4 HF + 2Xe + O 2
Table 7.13 : Structure of Xenon Compounds
Sr. No. Formula Oxidation state of Xe Structure

1. XeF 2 +2 Linear


2. XeF 4 +4 Square planar


3. XeF 6 +6 Distorted octahedral


4. XeO 3 +6 Trigonal pyramidal


5. XeOF 4 +6 Square pyamidal

ii. Reaction with PF 5 : XeF 2 forms adducts

on reaction with PF 5.

XeF 2 + PF 5 XeF 2 .PF 5

7.13.2 Xenon trioxide

a. Preparation of Xenon trioxide (XeO 3 ) :

Fluorides of Xenon react with water to

form XeO 3.

3XeF 4 + 6H 2 O 2 Xe + XeO 3 + 12 HF

+ 1^12 O 2

XeF 6 + 3H 2 O XeO 3 + 6HF

7.13.3 Oxyfluorides of Xenon : Xenon forms

the following oxyfluorides :

XeOF 2 , XeO 2 F 2 , XeO 3 F 2 , XeO 2 F 4 , XeOF 4