Page 332 - Arrow Pushing in Inorganic Chemistry A Logical Approach to the Chemistry of the Main Group Elements

THE NOBLE GASES
312
The process repeats itself until the formation of Xe(OTeF ) :
5 4
F 5 TeO F
B OTeF 5 F 5 TeO OTeF 5
B + Xe (8.43)
F F OTeF 5 F F F 5 TeO OTeF 5
Xe
F F

8.9 Xe–N BONDS

Always eager to push limits, chemists have devoted considerable attention to constructing
Xe–nonmetal bonds involving elements less electronegative than F or O. For Xe–N bonds,
interaction of the rather acidic bis(fluorosulfonyl)imide and XeF does the trick:
2
XeF + 2HN(SO F) → 2Xe[N(SO F) ] + 2 HF (8.44)
2 2
2
2
2
2
Since HF is a product, protonation of one of the F’s of XeF appears to be a plausible first
2
step:
H
N SO F + FO 2 S SO F
H 2 F Xe F + 2 (8.45)
SO 2 F N
F Xe F −
−
Nucleophilic attack by the [N(SO F) ] anion, with departure of HF as a leaving group,
2
2
completes the substitution of the first F atom.
FO S − SO 2 F
2
N
H
+ − HF N SO 2 F (8.46)
F Xe F Xe SO 2 F
F
The process repeats itself once more to yield the final product Xe[N(SO F) ] .
2
2 2
N
SO F N
2
Xe − Xe SO 2 F
2
F SO F + F
N + F SO 2
N
SO F FO S SO 2 F
2
2
H
SO F H
2
−
N N (8.47)
− HF N Xe
S F
FO 2 SO 2 FO S SO 2 F
2
N FO S F
SO 2 F 2 SO 2
+ Xe SO 2 F
F
H