Syntheses, characterization and crystal structures of Schiff base nickel(II) complexes with antibacterial activity
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Two nickel(II) complexes, [NiL<sup>1</sup>N<sub>3</sub>] (<b>1</b>) and [Ni(HL<sup>2</sup>)<sub>2</sub>(NCS)<sub>2</sub>)] (<b>2</b>), where L<sup>1</sup> = 2-[(2-diethylaminoethylimino)methyl]-4,6-difluorophenolate, L<sup>2</sup> = 2,4-difluoro-6-[(2-isopropylaminoethylimino)methyl]phenolate, have been prepared and structurally characterized by elemental analyses, IR and UV-Vis spectra, as well as single crystal X-ray determination. In complex <b>1</b>, the Ni atom is in square planar coordination, with three donor atoms of the deprotonated Schiff base ligand L<sup>1</sup> and the azido N atom. In complex <b>2</b>, the Ni atom is in octahedral coordination, with the three donor atoms of the zwitterionic Schiff base ligand HL<sup>2</sup> and two thiocyanato N atoms. The crystals are stabilized by hydrogen bonds. The complexes have strong antibacterial activity against <i>B. subtilis</i>, <i>S. aureus</i> and <i>E. coli</i>.
提供机构：
Taylor & Francis
创建时间：
2019-02-09
