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在甲醇体系中,分别将苯并咪唑席夫碱HL~1和HL~2与高氯酸镍进行配位反应得到2个结构类似的镍配合物[Ni(L~1)_2]·2H_2O(1)和[Ni(L~2)_2]·2H_2O(2)(HL~1=N-(benzimidazol-2-ylethyl)-5-chlorosalicylideneimine,HL~2=N-(Benzimidazol-2-ylethyl)-5-bromosalicylidenei-mine),并用元素分析、红外光谱、紫外-可见光谱和单晶X射线衍射对其结构进行了表征。结构分析表明:两个配合物均属于单斜晶系,C2/c空间群,Ni(Ⅱ)与来自2个席夫碱配体的4个氮原子和2个氧原子配位,形成八面体结构。配合物中的氢键将配合物1和配合物2分别连接成二维和三维网络结构。选取金黄色葡萄球菌和大肠杆菌作为菌种,研究了2个席夫碱配体和2个配合物的抑菌能力。
In methanol system, the coordination reactions of benzimidazole Schiff bases HL ~ 1 and HL ~ 2 with nickel perchlorate were carried out to obtain two nickel complexes [Ni (L ~ 1) _2] · 2H_2O 1) and [Ni (L 2) 2] · 2H 2 O (2) (HL ~ 1 = N- (benzimidazol-2-ylethyl) -5-chlorosalicylideneneine, 5-bromosalicylidene-mine). Its structure was characterized by elemental analysis, IR, UV-Vis and single crystal X-ray diffraction. Structural analysis shows that the two complexes belong to the monoclinic space group C2 / c, and Ni (Ⅱ) coordinates with four nitrogen atoms and two oxygen atoms from two Schiff base ligands to form octahedron structure. The hydrogen bonds in the complex connect Complex 1 and Complex 2 into two-dimensional and three-dimensional networks, respectively. Staphylococcus aureus and Escherichia coli were selected as bacteria to study the antibacterial activity of two Schiff base ligands and two complexes.