کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1340438 | 979735 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis, structure and properties of ternary copper(II) complexes of ONO donor Schiff base, imidazole, 2,2′-bipyridine and 1,10-phenanthroline Synthesis, structure and properties of ternary copper(II) complexes of ONO donor Schiff base, imidazole, 2,2′-bipyridine and 1,10-phenanthroline](/preview/png/1340438.png)
Reaction of copper(II) salt with salicylidene anthanilic acid (SAA), a tridentate ligand and imidazole (ImH), a monodentate ligand or bidentate polypyridyl ligands like 2,2′-bipyridine (bipy) or 1,10-phenanthroline(phen) in MeOH:MeCN (1:1 V/V) yields [Cu(SAA)(ImH)] (1), [Cu(SAA)(bipy)]CH3CN (2) and [Cu(SAA)(phen)] (3) in ∼80% yield. These complexes were characterized by elemental analysis, magnetic susceptibility, X-band e.p.r., electronic spectroscopy and cyclic voltammetry. All the reported complexes show g∥ > g⊥ > 2.0023 and G values falling within the range of 2–4 are consistent with a dx2-y2dx2-y2 ground state in a square planar or square pyramidal geometry. Single crystal X-ray analysis of 1 has revealed the presence of a distorted square planar geometry (N2O2) and 2 has revealed the presence of distorted square pyramidal (4 + 1) geometry. In both structures the ONO Schiff base occupies the basal plane. Magnetic susceptibility measurements at room temperature were in the range 1.79 ± 0.01 BM. Superoxide dismutase (SOD) activity of the present complexes were also measured.
Three new complexes [Cu(SAA)(ImH)] (1), [Cu(SAA)(bipy)] CH3CN (2), [Cu(SAA)(phen)] (3) were characterized by elemental analysis, magnetic susceptibility, X-band e.p.r., electronic spectroscopy and cyclic voltammetry. Single crystal X-ray analysis of (1) has revealed the presence of a distorted square planar geometry (N2O2) and (2) has revealed the presence of a distorted square pyramidal (4+1) geometry. In both structures the ONO Schiff base occupies the basal plane. Magnetic susceptibility measurements at room temperature were in the range 1.79 ± 0.01 BM. Superoxide dismutase (SOD) activity of the present complexes were also measured and discussed.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 25, Issue 17, 4 December 2006, Pages 3312–3318