Synthesis,characterization, crystal structures,and superoxide dismutase activity of copper(II) octahedral complexes containing tri- and monodentate ligands |
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| Abstract: | Three new copper(II) complexes Cu(PSBP)2](NO3)(BF4) (1), Cu(DAPBMA)2](BF4)2 (2), and Cu(ImH)4(NO3)2] (3), where PSBP = 4-phenylsemicarbazide-2-benzoylpyridine, DAPBMA = 2,6-diacetylpyridine-bis-4-methoxyaniline, and ImH = Imidazole, have been synthesized and characterized by elemental analysis, FAB mass spectrometry, magnetic susceptibility, X-band electron paramagnetic resonance (EPR), electronic spectroscopy, and cyclic voltammetry. Frozen solution EPR spectra of the complexes have axial features with g ∥ > g ⊥ > 2.003 suggesting the presence of a d x 2? y 2 ground state. Single crystal X-ray analyses of 1–3 reveal the presence of distorted octahedral geometry. All complexes exhibit significant superoxide dismutase activity. |
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| Keywords: | Copper(II) complexes X-band EPR Superoxide dismutase activity |
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