Tuning Reactivity of Platinum(II) Complexes

k st
obs(1 ) , s-1
0.04
0.03
0.02
0.01
TU
DMTU
TMTU
0.00
0.000 0.002 0.004 0.006 0.008
[NU]/ mol dm -3
Figure 4.5: Concentration dependence of kobs(1 st ) for the substitution of
k obs(2 nd ) , s -1
first aqua ligand in 2,5pzn by thiourea nucleophiles, pH = 2.0,
T = 298.15 K, I = 0.10 M (0.01 M HClO4, adjusted with NaClO4).
0.003 TU
DMTU
TMTU
0.002
0.001
0.000
0.00 0.02 0.04 0.06 0.08 0.10
[NU]/ mol dm -3
Figure 4.6: Concentration dependence of kobs(2 nd ) for the substitution of
second aqua ligand in 2,5pzn by thiourea nucleophiles, pH =
2.0, T = 298.15 K, I = 0.10 M (0.01 M HClO4, adjusted with
NaClO4).
19