化学学报 ›› 2002, Vol. 60 ›› Issue (11): 2011-2016. 上一篇    下一篇

研究论文

Schiff碱Cu(II)配合物的结构、光谱及电化学性质

尹业高;李丹;吴涛   

  1. 汕头大学理学院化学系,汕头(515063)
  • 发布日期:2002-11-15

Crystal Structures and Spectroscopic and Electrochemical Properties of Schiff Base Cu(II) Complexes

Yin Yegao;Li Dan;Wu Tao   

  1. Department of Chemistry, Faculty of Science, Shantou University, Shantou(515063)
  • Published:2002-11-15

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)]ClO_4(1)和[Cu(II)(L2)-(H_2O)_2](BF_4)_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昌体结构。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 = 1.1147(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=0.044.2的晶胞参数为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.此外,配合物1的Cu-O(1)键长[0.1880(5)nm]和可 见吸收波长(λ_(max)=557nm)比2[0.1982(6)nm,λ_(max)=605nm]短。配合物2在- 0。80~-1.20V范围内出现两个氧化和两个还原过程。

关键词: 席夫碱, 铜络合物, 晶体结构, 电子光谱学, 结构表征, X射线衍射分析

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 P1 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] that 2 gives two reductions and two oxidations in range of = 0.80 ~-1.20V.

Key words: SCHIFF BASE, COPPER COMPLEX, CRYSTAL STRUCTURE, ELECTRON SPECTROSCOPY, STRUCTURE CHARACTERISTICS, XRD

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