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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Spectroscopic and electrochemical studies of hetero-bimetallic copper complexes with Schiff's base ligand
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Spectroscopic and electrochemical studies of hetero-bimetallic copper complexes with Schiff's base ligand

机译:席夫碱配体的异双金属铜配合物的光谱和电化学研究

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Using Schiff's base ligand, several Cu(II) based bimetallic complexes such as Cu-Cu, Cu-Co, Cu-Ni. Cu-Zn, Cu-Mn have been prepared in a stepwise procedure. The structures of these complexes and the ligand have been proposed on the basis of FAB mass, elemental analysis, UV-vis, IR, electron paramagnetic resonance (EPR) and CV studies. EPR parameters. obtained through complete simulation, suggest that the formation of bimetallic complexes forces the Cu(II) centre to increase the flexibility in comparison with the monometallic Cu(II) complex. However, the nature of the second metal ion in the bimetallic complex effects the distortion around the first metal ion. The reduction of the complexes from Cu(II) to Cu(I) involves a large geometrical change and is found to be irreversible. A large positive shift is seen in the cathodic process, which can be ascribed to increased distortion due to bimetallic coordination. These complexes have potential usage in DNA studies. (c) 2005 Published by Elsevier B.V.
机译:使用席夫氏碱配体,可以合成几种基于铜(II)的双金属配合物,例如铜-铜,铜-钴,铜-镍。 Cu-Zn,Cu-Mn已逐步制备。这些络合物和配体的结构是根据FAB质量,元素分析,UV-vis,IR,电子顺磁共振(EPR)和CV研究提出的。 EPR参数。通过完全模拟获得的结果表明,与单金属Cu(II)配合物相比,双金属配合物的形成迫使Cu(II)中心增加了柔韧性。然而,双金属络合物中第二金属离子的性质影响第一金属离子周围的变形。将配合物从Cu(II)还原为Cu(I)涉及很大的几何变化,并且是不可逆的。在阴极过程中看到了很大的正移,这可以归因于由于双金属配位导致的畸变增加。这些复合物在DNA研究中具有潜在用途。 (c)2005年由Elsevier B.V.

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