Skip to main content

Table 3 Dependence of the rate, kobs (× 104, s-1) on [CrIII(HIDA)(Arg)(H2O)2+]b, [IO4-] and temperature at pH = 2.92 and I = 0.20 mol dm-3.

From: Inner-sphere oxidation of ternary iminodiacetatochromium(III) complexes involving DL-valine and L-arginine as secondary ligands. Isokinetic relationship for the oxidation of ternary iminodiacetato-chromium(III) complexes by periodate

102 [IO4-]

(mol dm-3)

25°C

35°C

40°C

45°C

50°C

55°C

0.5

0.60 ± 0.02

0.75 ± 0.04

0.80 ± 0.01

0.92 ± 0.03

1.23 ± 0.02

1.33 ± 0.04

1.0

1.20 ± 0.01

1.43 ± 0.03

1.55 ± 0.02

1.83 ± 0.03

2.07 ± 0.05

2.42 ± 0.07

1.5

1.64 ± 0.03

2.00 ± 0.05

2.22 ± 0.03

2.57 ± 0.06

2.62 ± 0.07

3.25 ± 0.15

2.0

1.95 ± 0.06

2.48 ± 0.09

2.78 ± 0.08

3.30 ± 0.09

3.33 ± 0.08

3.83 ± 0.35

3.0

2.76 ± 0.04

3.33 ± 0.15

3.90 ± 0.12

4.27 ± 0.13

4.50 ± 0.15

5.00 ± 0.50

4.0

3.35 ± 0.05

3.83 ± 0.21

5.45 ± 0.18

6.23 ± 0.20

6.67 ± 0.30

6.92 ± 0.50

5.0

3.97 ± 0.08

5.00 ± 0.30

5.83 ± 0.25

6.67 ± 0.35

7.50 ± 0.40

8.23 ± 0.80

  1. b [CrIII(HIDA)(Arg)(H2O)2+] = 2.50 × 10-4 mol dm-3; 104kobs = 3.19 ± 0.07, 3.22 ± 0.10, 3.37 ± 0.08 and 3.25 ± 0.06 s-1 at 104 [CrIII(HIDA)(Arg)(H2O)2+] of 1.25, 3.75, 5.0 and 6.25 mol dm-3, respectively at 45°C and [IO4-] = 0.02 mol dm-3.
Back to article page

BMC Chemistry

ISSN: 2661-801X

Contact us