Chemistry Reference
In-Depth Information
aliphatic ammonium ion and (CF
3
SO
2
)
2
N
−
(TFSA) have wide potential window of about 6
V.
Figure 6.21
Linear sweep voltammograms in
various ionic liquids
Phosphonium ionic liquids are superior to
aliphatic ammonium ionic liquids in oxidation
resistance, and they have a wide potential
window (about 6.5 V) as well as thermal
stability.
Poly(hydrogen fluoride) salt ionic liquids,
however, have a narrow negative potential
window because of the reduction of acidic
proton, as shown in
Figure 6.22
, but such easy
proton reduction assists electrochemical
fluorination preferentially (see sections 5.7 and
5.8.6). Et
3
N-3HF is easily oxidized because of
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