Copper(II) complexes of sterically hindered Schiff base ligands: Synthesis, structure, spectra and electrochemistry
作者:Ramalingam Balamurugan、Mallayan Palaniandavar、Malcolm A. Halcrow
DOI:10.1016/j.poly.2005.07.047
日期:2006.3
Abstract The synthesis, structure and spectral and redox behaviour of copper(II) complexes of sterically constrained N3, N3S2 and N2S2 ligands are described. The ligands 2,6-bis(2,4,6-trimethylphenyliminomethyl)pyridine (L1), 2,6-bis(2,6-diisopropylphenyliminomethyl)pyridine (L2), 2,6-bis(2-methylthiophenyliminomethyl)pyridine (L3), 1,3-bis(2-methylthiophenyliminomethyl)benzene (L4), 1,3-bis(2,4,6
摘要描述了空间受约束的N3,N3S2和N2S2配体的铜(II)配合物的合成,结构以及光谱和氧化还原行为。配体2,6-双(2,4,6-三甲基苯基亚氨基甲基)吡啶(L1),2,6-双(2,6-二异丙基苯基亚氨基甲基)吡啶(L2),2,6-双(2-甲基硫代苯基亚氨基甲基)吡啶( L3),1,3-双(2-甲基硫代苯基亚氨基甲基)苯(L4),1,3-双(2,4,6-三甲基苯基亚氨基甲基)苯(L5)和1,3-双(2,6-二异丙基-苯基亚氨基甲基) )苯(L6)已合成。L1–L5的1:1铜(II)配合物已通过光谱和电化学技术进行了分离和表征。复合物[Cu(L2)Cl2](2)的X射线晶体结构已成功确定,并且发现其具有扭曲的方形金字塔配位几何形状。如[Cu(L1)Cl2]所示,该配合物中异丙基被较低空间要求的甲基取代,导致几何变形降低。该配合物显示出相对较高的正氧化还原电势,并且具有低重组能量势垒,可用于涉及Cu(II)/