Journal
POLYHEDRON
Volume 117, Issue -, Pages 788-794Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2016.07.027
Keywords
Copper complex; Crystal structure; Mimic; Superoxide dismutase; Adamantane
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Funding
- Natural Science Foundation of Anhui Province of China [1408085MKL21]
- Special and Excellent Research Fund of Anhui Normal University
- Postgraduate Scientific Research and Innovation Project of Anhui Normal University [2015cxsj142]
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Two mixed-ligand Cu(II) complexes, [Cu(L-1)(L-2)](ClO4)(2)center dot H2O (1) and [Cu(L-1)(L-3)](ClO4)(2)center dot H2O center dot CH3OH (2) (L-1 = N,N'-bis(2-pyridylmethyl)amantadine, L-2 = 5,5'-dimethy-2,2'-bipyridine, and L-3 = 1,10-phenanthroline), were synthesized and characterized by elemental analysis, UV-Vis, infrared spectra and single crystal X-ray diffraction. Copper ions in 1 and 2 behave the slightly distorted tetragonal pyramid configuration provided by CuN5 coordination set. Both complexes exhibit the quasi-reversible Cu(11)/Cu (1) one-electron redox waves determined by the cyclic voltammetry. Moreover, the frontier molecular orbital energies were obtained by DFT calculations with B3LYP method at LanL2DZ basis. Furthermore, by using NBT assay at pH 7.8, the superoxide dismutase (SOD)-like activity (IC50) of 1 and 2 were measured to be 0.167 and 0.242 mu M, respectively. The difference in SOD-like activities of two complexes could be ascribed to the rigidity of the auxiliary ligands. (C) 2016 Elsevier Ltd. All rights reserved.
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