Synthesis, characterization and superoxide dismutase studies of square pyramidal copper(II) complexes with bi and tridentate polyamine ligands
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چکیده
Ternary copper(II) complexes containing bi and tridentate polyamine ligands, viz. [Cu(dien)(en)](ClO4)2 (1), [Cu(dien)(temed)](ClO4)2 (2) and [Cu(pmdt)(temed)](ClO4)2 (3) where dien = diethylenetriamine, en = ethylenediamine, temed = N,N,N′,N′-tetramethylethylenediamine and pmdt = N,N,N′,N′,N′′-pentamethyldiethylenetriamine have been synthesized and characterized by elemental analysis, magnetic susceptibility, X-band EPR spectroscopy and electronic spectroscopy. Single crystal X-ray of complex (1) reveals the presence of a distorted square pyramidal geometry in the complex. The complex (1) crystallizes in the monoclinic space group P21/n with unit cell parameters a = 8.4014(10) Å, b = 14.474(3) Å and c = 12.935 (2) Å. Complex 1 has a five coordinate (4+1) geometry with a CuN5 core. Magnetic susceptibility and electron paramagnetic resonance (EPR) behaviour of these complexes show their paramagnetic nature (3d Cu, S = 1⁄2). Superoxide dismutase activity of these complexes has also been measured.
منابع مشابه
Mononuclear and Dinuclear Copper(II) Complexes Containing N, O and S Donor Ligands: Synthesis, Characterization, Crystal Structure Determination and Antimicrobial Activity of [Cu(phen)(tda)].2H2O and [(phen)2Cu(µ-tda)Cu(phen)](ClO4)2.1.5H2O
Copper complexes of [Cu(phen)(tda)].2H2O(1) and [(phen)2Cu(µ-tda) Cu(phen)](ClO4)2.1.5H2O (2) (where phen is 1,10-phenanthroline and tda2- is thiodiacetate) have been synthesized. Both complexes were characterized by elemental analysis, IR, UV–Vis spectroscopy and cyclic voltammetry. Their solid state struct...
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