Salen型铜(Ⅱ)和镍(Ⅱ)配合物的合成与电化学性质

Synthesis and Electrochemical Properties of Salen-type Copper(Ⅱ) and Nickel(Ⅱ) Complexes

合成了2种salen型配体及其具有N2O2配位模式的salen型铜、镍金属配合物ML1和ML2[M=Cu,Ni;salen型配体L1=N,N'-双(4-羟基-邻羟苯亚甲基)-2,2'-联苯二胺;L2=N,N'-双(3,5-二叔丁基-邻羟苯亚甲基)-2,2'-联苯二胺];并通过核磁共振波谱(1H NMR)、电喷雾质谱(ESI-MS)、红外光谱(FT-IR)、紫外-可见光谱(UV-Vis)和元素分析等对配体及目标金属配合物进行了表征。循环伏安法电化学研究发现,在-1.5^+1.5 V电势扫描中,CuL2和NiL1只有一组单电子准可逆氧化还原过程,而NiL2发生了两次氧化还原反应。

Two salen-type ligands and their metal complexes （ ML1 and ML2, M = Cu or Ni, L1 = N, N＇- bis （4-hydroxysalicylidene） - 2,2＇- biphenyldiamine, L2 = N, N＇-bis （ 3,5-di-tert-butyl-salicylidene ） -2, 2＇- biphenyldiamine） with tetradentate N202 coordinate mode were synthesized. These complexes were characterized with Ill-nuclear magnetic resonance （IH NMR ）, ultraviolet-visible absorption spectroscopy （UV-Vis）, Fourier transform infrared spectroscopy （ FT-IR ）, mass spectrometry （ MS ）, and elemental analyses. The electrochemical properties of the synthesized complexes were also studied by cyclic vohammetry （CV）. The CV curves of CuLz and NiL1 only contained a one-electron quasi-reversible redox peak in the range of - 1.5 - ＋ 1.5 V. In contrast, two redox peaks were observed in the CV curve of NiL2.