Nickel (II) and Copper (II) Complexes Derived from NNOS Donor Unsymmetrical Tetradentate Schiff Base Ligands: Synthesis, Characterization, and Thermodynamic Studies
作者:Mozaffar Asadi、Sheida Esmaielzadeh、Khosro Mohammadi
DOI:10.1080/10426500903074841
日期:2010.6.30
the metal complexes (M = Cu, Ni) of these ligands were prepared and characterized by elemental analysis, IR, 1H NMR, UV-Vis, and mass spectrometry.The formation constants and the thermodynamic free energies were measured using UV-Vis spectrophotometry titration for 1:1 complex formation at constant ionic strength 0.1 M (NaClO4) at 25°C in DMF. The trend of the complex formation of the nickel and copper
通过 2-(3-氨基丙氨基) 环戊烯二硫代羧酸甲酯 (Hcdpd) 与一些取代的水杨醛、2-羟基苯乙酮和 2-羟基二苯甲酮缩合获得了 NNOS 配位球。此外,还制备了这些配体的金属配合物(M = Cu、Ni),并通过元素分析、IR、1H NMR、UV-Vis 和质谱进行了表征。使用 UV-Vis 测量了形成常数和热力学自由能分光光度法滴定在 25°C 的 DMF 中以恒定离子强度 0.1 M (NaClO4) 形成 1:1 络合物。镍和铜配合物形成的趋势如下:[M(cdMesalpd)] > [(Mcdsalpd)] > [M(cdPhsalpd)] 和[M(cd5OMesalpd)] > [M(cd3OMesalpd)] > [M(cd4OMesalpd)] 和 [M(cd5OMesalpd)] > [M(cdsalpd)] > [M(cd5Brsalpd)] > [M(cd5Clsalpd)]