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10
4
(a)
10
3
10
2
200
300
400
500
600
700
800
wavelength (nm)
(b)
10
4
10
3
10
2
10
1
200
300
400
500
600
700
800
wavelength (nm)
Figure 6.19.
(a) Scanned (solid line) spectrum of
MnO
3−
in 10 M NaOH compared with
the point-by-point (
) spectrum of O
3
Mn(OH)
2−
obtained by the pulse-radiolytic
reduction of
MnO
2−
in 0.01 M NaOH. (b) Point-by-point spectrum (
), measured 50 µs
after the pulse, of the Mn(V) ester formed by the reaction of
tert
-butyl alcohol radicals
with
MnO
2−
in 1 M NaOH. The spectrum of the intermediate (a) in reaction (6.64),
decays to the final spectrum (
) of (b) (
MnO /O Mn OH
4
− −
( )
); 1.0 M NaOH and 25°C
(adapted from Rush and Bielski [183] with the permission of the American Chemical
Society).
3
3
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