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二核双席夫碱铜(Ⅱ)配合物的合成、晶体结构及抗菌活性研究(英文) 被引量:8

Synthesis, Crystal Structures and Antimicrobial Activity of Dinuclear Copper(Ⅱ) Complexes with bis-Schiff Bases
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摘要 合成了一对结构类似的双核铜配合物,[CuL1]2(1)和[CuL2]2(2),其中L1是双席夫碱配体N,N′-二(5-氟水杨基)-1,3-丙二胺(H2L1)的二价阴离子,L2是N,N′-二(5-氟水杨基)-1,2-乙二胺(H2L2)的二价阴离子,通过元素分析、红外光谱以及单晶X-射线衍射表征了它们的结构。配合物1以单斜晶系P21/c空间群结晶,其晶体学参数a=1.348 8(1)nm,b=0.681 4(1)nm,c=1.708 7(1)nm,β=108.903(3)°,V=1.485 7(2)nm3,Z=4,R1=0.048 0,wR2=0.114 1,Goof=1.115。配合物2以单斜晶系C2/c空间群结晶,其晶体学参数a=2.756 8(2)nm,b=0.703 6(1)nm,c=1.454 7(1)nm,β=94.758(2)°,V=2.811 8(5)nm3,Z=4,R1=0.047 2,wR2=0.113 9,Goof=1.094。X-射线分析表明2个化合物都是中心对称的双核配合物,其中Cu原子都是四方椎配位构型。通过MTT法研究了这2个配合物的抗细菌(枯草芽孢杆菌,金黄色葡萄球菌,大肠杆菌和荧光假单胞菌)和抗真菌(白假丝酵母菌和黑曲霉菌)活性。 A pair of structurally similar dinuclear copper(H) complexes, [Cu L^1]2 (1) and [CuL^2]2 (2), where L^1 is the dianionic form of the bis-Schiff base N,N'-bis(5-fluorosalicylidene)-1,3-propanediamine (H2L^1), and L^2 is the dianionic form of N,N'-bis(5-fluorosalicylidene)-1,2-ethanediamine (H2L^2), have been synthesized and characterized by elemental analysis, infrared spectra and single-crystal X-ray diffraction. Complex 1 crystallizes as the monoclinic space group P2 1/c, with unit cell dimensions a=1.348 8(1) nm, b=0.681 4(1) nm, c=1.708 7(1) nm, β=108.903 (3)°, V=1.485 7(2) nm3, Z=4, R1=0.048 0, wR2=0.114 1, Goof=1.115. Complex 2 crystallizes as the monoclinic space group C2/c, with unit cell dimensions a=2.756 8(2) nm, b=0.703 6(1) nm, c=1.454 7(1) nm, β=94.758(2)°, V= 2.811 8 (5) nm3, Z=4, R1=0.047 2, wR2=0.113 9, Goof=1.094. X-ray analysis indicates that the complexes are centrosymmetric dinuclear species, with the Cu atoms in square pyramidal coordination. The complexes were evaluated for their antibacterial (Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Pseudomonas fluorescence) and antifungal (Candida albicans and Aspergillus niger) activities by MTT (3-(4,5-dimethyhhiazol-2- yl)-2,5-diphenyl tetrazolium bromide) method.
作者 仇晓阳
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2014年第7期1667-1672,共6页 Chinese Journal of Inorganic Chemistry
基金 国家自然科学基金(No.21001071,21271125,21201116) 河南省教育厅高校骨干教师基金(No.2010GGJS-157) 河南省基础和高等技术基金(No.102300410282,132300410397)资助项目
关键词 席夫碱 铜配合物 双核配合物 晶体结构 抗菌活性 Schiff base copper complex dinuclear complex crystal structure antimicrobial activity
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