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报道了含三齿配体N,N-二(2-苯并咪唑甲基)亚胺(IDB)的单核铜(Ⅱ)配合物[Cu(IDB)_2]Cl_2·2CH_3CH_2OH·2H_2O的合成、晶体结构及与常见金属离子的反应.该配合物为三斜晶系,P1空间群,a=0.956 5(2)nm,b=0.986 3(2)nm,c=1.025 2(3)nm,α=81.915°,β=88.330°,γ=87.347°,V=0.956 28(40)nm~3,Z=1,F(000)=427,D_c=1.419g.cm~(-3),M_r=817.27,μ=0.764mm~(-1),最终因子R[I>2σ(I)]:R_1=0.050 5,ωR_2=0.141 7;R(全部数据):R_1=0.059 1,ωR_2=0.152 5.结构分析表明,铜(Ⅱ)分别与配体中的4个苯并咪唑N原子和2个胺基N原子配位,形成一个六配位的畸变八面体.荧光光谱分析表明:在不同浓度、不同金属离子中,标题配合物的荧光强度发生变化;过渡金属、碱金属和碱土金属离子对标题配合物的荧光有猝灭作用;过渡金属离子影响作用较碱金属、碱土金属的影响作用更为明显;但铝离子对标题配合物的荧光却有增强作用.
The synthesis of mononuclear copper (Ⅱ) complex [Cu (IDB) 2] Cl_2.2CH_3CH_2OH · 2H_2O containing tridentate ligand N, N-bis (2-benzimidazolylmethyl) imide (IDB) Crystal structure and the reaction with common metal ions. The complex is a triclinic system with P1 space group, a = 0.956 5 (2) nm, b = 0.986 3 (2) nm and c = 1.025 2 α = 81.915 °, β = 88.330 °, γ = 87.347 °, V = 0.956 28 (40) nm~3, Z = 1, F (000) = 427, D_c = 1.419g.cm -3, M_r = 817.27, μ = 0.764mm -1, final factor R [I> 2σ (I)]: R_1 = 0.050 5, ωR_2 = 0.141 7; R (all data): R_1 = 0.059 1, ωR_2 = 0.152 5 . Structural analysis showed that copper (Ⅱ) coordinated with four benzimidazole N atoms and two amine N atoms respectively to form a six-coordinated distorted octahedron.Fluorescence spectroscopy analysis showed that at different concentrations , The fluorescence intensity of the title complex changed in different metal ions; the fluorescence of the title complex quenched by transition metal, alkali metal and alkaline earth metal ions; the effect of transition metal ions was more affected than alkali metal and alkaline earth metal Is obvious; however, the aluminum ions enhance the fluorescence of the title complex.