作　　者： ; ; ;

机构地区： 汕头大学理学院化学系

出　　处： 《化学学报》 2002年第11期2011-2016,共6页

摘　　要： 为了探讨配合物结构对性质的影响 ,合成了两个Schiff碱的铜配合物 { [Cu(Ⅱ ) (L1) ]ClO4(1)和 [Cu(Ⅱ ) (L2 ) (H2 O) 2 ](BF4) 2 (2 ) } ,并用红外、质谱和元素分析对它们进行了表征 ,用X射线衍射方法测定了它们的晶体结构 .实验结果表明 :配合物 1和 2均属三斜晶系 ,P1- 空间群 .1的晶胞参数为a =1 114 7(6 )nm ,b =1 14 81(7)nm ,c =0 770 (3)nm ;α=98 81(4)°,β =10 6 94 (4)° ,γ =6 6 4 9(4)° ;V =0 8715 (8)nm3 ,Z =2 ,R =0 0 4 4 2的晶胞参数为a=1 0 819(4)nm ,b =1 4 0 95 (6 )nm ,c=1 0 192 (4)nm ;α =96 5 4 (4)° ,β =10 6 18(3)° ,γ =80 5 1(3)°;V =1 4 6 81(5 )nm3 ,Z =2 ,R =0 0 6 8.此外 ,配合物 1的Cu—O (1)键长 [0 1880 (5 )nm]和可见吸收波长 (λmax=5 5 7nm )比 2[0 1982 (6 )nm ,λmax=6 0 5nm]短 .配合物 2在 - 0 80～ - 1 2 0V范围内出现两个氧化和两个还原过程 . In an attempt to examine the influence of structure on the property of a coordination compound, two Schiff base Cu(Ⅱ) complexes, [Cu(Ⅱ)(L1)]ClO 4(1), [Cu(Ⅱ) 2(L2)(H 2O) 2](BF 4) 2(2), were prepared and identified by IR, MS and EA, and their structures were determined by X ray diffraction. The work confirms that both 1 and 2 belong to triclinic system and P 1- space group. The cell parameters of 1 are a =1 1147(6) nm, b =1 1481(7) nm, c =0 770(3) nm; α =98 81(4)°, β =106 94(4)°, γ = 66 49(4)°; V =0 8715(8) nm 3, Z =2, R =0 044 and of 2 are a =1 0819(4) nm, b =1 4095(6) nm, c = 1 0192(4) nm; α =96 54(4)°, β=106 18(3)°, γ=80 51(3)°; V =1 4681(5) nm 3, Z =2, R =0 068. Further, the work validates that 1 has a relatively shorter Cu-O(1) distance [0 1880(5) nm] and visible absorption wavelength ( λ max =557 nm) than 2 [0 1982(6) nm, λ max =605 nm] and that 2 gives two reductions and two oxidations in range of -0 80～-1 20 V.

关 键 词： 碱 配合物 晶体结构 电子光谱 电化学 铜 模拟酶 配位化学

领　　域： [生物学] [理学] [理学]