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Original Article

Transition metal complexes with N, S donor ligands as synthetic antioxidants: Synthesis, characterization and antioxidant activity

, , &
Pages 394-403 | Received 30 Jun 2010, Accepted 17 Aug 2010, Published online: 13 Oct 2010

Figures & data

Table 1.  Analytical and physical data for complexes.

Table 2.  Main IR spectral bands for complexes.

Figure 1.  TGA curve of {weight (%) vs temperature (°C)} (A) [Co(C11H17N3S)Cl2] and (B) [Cu (C11H17N3S)Cl2].

Figure 1.  TGA curve of {weight (%) vs temperature (°C)} (A) [Co(C11H17N3S)Cl2] and (B) [Cu (C11H17N3S)Cl2].

Table 3.  Fragmented molecular ions vs m/z values of following metal complexes.

Figure 2.  Structural formula for the complexes (A) [M(LH)Cl2] and (B) [M(LH)2Cl2].

Figure 2.  Structural formula for the complexes (A) [M(LH)Cl2] and (B) [M(LH)2Cl2].

Table 4.  Antioxidant activity of metal complexes and ligands (DPPH assay).

Table 5.  Antioxidant activity of metal complexes and ligands (ABTS assay).

Table 6.  IC50 values of test compounds (µg/mL).

Figure 3.  Free Radical Scavenging Activity of compounds (A) DPPH assay and (B) ABTS assay.

Figure 3.  Free Radical Scavenging Activity of compounds (A) DPPH assay and (B) ABTS assay.

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