...
首页> 外文期刊>Journal of the Indian Chemical Society >Cyclic voltammetric studies of some tris(diimine)cobalt(II) complexes in dimethylformamide solution
【24h】

Cyclic voltammetric studies of some tris(diimine)cobalt(II) complexes in dimethylformamide solution

机译:二甲基甲酰胺溶液中某些三(二亚胺)钴(II)配合物的循环伏安研究

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

The cyclic voltammetric behaviour of tris(diimine)cobalt(n) complexes,[CoL3]~(2+),(L-diimine=bipyridyl (bipy),phenanthroline (phen) and 4,7-diphenyl-1,10-phenanthroline (bathophen)) has been investigated in DMF solution containing 0.1 MNaClO_4 as a supporting electrolyte at a glassy carbon working electrode (GCE).All these complexes undergo a diffusion-controlled quasi-reversible one-electron oxidation couple (Co~(2+/3+)) at E~0'=+320 to+430 mV vs SCE and a single-electron reduction couple (Co~(2+/+)) at E~0'=-680 to-690 mV vs SCE.The peak current ratio for both oxidation and reduction couples is less than unity,suggesting that redox processes involve EC mechanism.CV results also revealed that the ease of reduction increases in the order:bipy-> phen-> bathophen,clearly demonstrating that the chemical nature,size and positions of the substituents on the parent phenanthroline rings,i.e.,the electronic and steric characteristics of the ligands influence the redox potentials of the complexes.
机译:三(二亚胺)钴(n)络合物[CoL3]〜(2 +),(L-二亚胺=联吡啶(bipy),菲咯啉(phen)和4,7-二苯基-1,10-菲咯啉的循环伏安行为(bathophen))在玻璃碳工作电极(GCE)上以0.1 MNaClO_4作为支持电解质的DMF溶液进行了研究,所有这些配合物均经历了扩散控制的准可逆单电子氧化对(Co〜(2 + / 3+))在E〜0'= + 320至+430 mV时相对于SCE,而单电子还原偶数(Co〜(2 + / +))在E〜0'=-680至-690 mV时相对于SCE。氧化和还原对的峰值电流比均小于1,这表明氧化还原过程涉及EC机制。CV结果还表明,还原的难易程度依次为:Bipy-> phen-> Bathophen,清楚地表明了化学反应母体菲咯啉环上取代基的性质,大小和位置,即,配体的电子和空间特性影响配合物的氧化还原电势es。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号