Role of Active Complexes of Selected Thiopurine Derivatives …
535
Tables 2 a, b
The values of cathodic transition coefficients
α and standard rate constants k
s [38, 39] of 1
: 10 −3
mol
: dm −3
Bi(III) ion electroreduction in
2 mol
: dm −3
chlorates(VII) and in the presence of 1
: 10 −3
mol
: dm −3
thiopurines
+ different surfactants concentration systems
a
1
: 10 −3
mol
: dm −3
thiopurine
+
10 6
c
TritonX-100 /mol
: dm −3
0
6-mercaptopurine
6-thioguanine
Azathioprine
α
10 3
k
s /cm
: s −1
α
10 3
k
s /cm
: s −1
α
10 3
k
s /cm
: s −1
α
10 3
k
s /cm
: s −1
0
0.28
0.197
0.68
9.180
0.68
9.760
0.51
7.360
10
0.28
0.197
0.68
8.850
0.68
9.755
0.46
7.300
20
0.28
0.197
0.67
7.190
0.67
9.680
0.43
7.150
50
0.28
0.197
0.64
5.082
0.67
9.540
0.42
7.000
100
0.28
0.197
0.60
0.925
0.66
6.320
0.38
5.250
b
1
: 10 −3
mol
: dm −3
thiopurine
+
10 6
c
Tween80 /mol
: dm −3
0
6-mercaptopurine
6-thioguanine
Azathioprine
α
10 3
k
s /cm
: s −1
α
10 3
k
s /cm
: s −1
α
10 3
k
s /cm
: s −1
α
10 3
k
s /cm
: s −1
0
0.28
0.197
0.68
9.180
0.68
9.760
0.51
7.360
10
0.28
0.197
0.67
7.765
0.68
8.650
0.43
7.250
20
0.28
0.197
0.66
4.370
0.67
4.987
0.41
4.100
50
0.28
0.197
0.63
3.280
0.67
5.120
0.38
3.174
100
0.28
0.197
0.57
0.218
0.63
3.050
0.37
0.190