【摘 要】
：
Two novel macrocyclic Schiff base complexes [LnL(PhCOO)(CH3OH)](ClO4)2·(CH3OH)2 (Ln =Ho,1;Ln =Er,2),in which L denotes the macrocyclic ligand,were synthesized
【机 构】
：
School of Chemical Engineering & Pharmacy,Wuhan Institute of Technology, Wuhan 430205, China“,”Schoo
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Two novel macrocyclic Schiff base complexes [LnL(PhCOO)(CH3OH)](ClO4)2·(CH3OH)2 (Ln =Ho,1;Ln =Er,2),in which L denotes the macrocyclic ligand,were synthesized via condensation of 2,6-diformyl-4-methyl-phenol and 1,3-diamino-2-propanol by employing benzoate as the second ligand.Their crystal structures were determined by X-ray diffraction,which showed that both complexes belong to a monoclinic system with space group P21/c.The coordination polyhedron displayed a distorted bicapped trigonal prism with the coordination number of eight.Both complexes efficiently cleaved supercoiled DNA to its nicked circular form.The UV-vis absorption results and ethidium bromide (EB) fluorescence spectra indicated that the complexes bind to CT-DNA in an intercalative mode,with Ksq values to be 11830 and 10560,respectively.
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