高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (10): 2262.doi: 10.7503/cjcu20130354

• 研究论文: 无机化学 • 上一篇    下一篇

不同双/多齿配体Co(Ⅱ)配合物的氧合性能

文红梅, 张旭, 李辉, 岳凡, 王吉德   

  1. 新疆大学化学化工学院, 石油天然气精细化工教育部和自治区重点实验室, 乌鲁木齐 830046
  • 收稿日期:2013-04-18 出版日期:2013-10-10 发布日期:2013-10-10
  • 作者简介:王吉德,男,博士,教授,博士生导师,主要从事配位化学研究.E-mail:awangjd@sina.cn
  • 基金资助:

    国家自然科学基金(批准号:21261022, 21162027和20961010)资助.

Contrast Study of the Oxygenation of Co(Ⅱ) Complexes with Different Bi-/Poly-dentate Ligands

WEN Hong-Mei, ZHANG Xu, LI Hui, YUE Fan, WANG Ji-De   

  1. Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
  • Received:2013-04-18 Online:2013-10-10 Published:2013-10-10

摘要:

在室温水溶液体系中采用紫外-可见分光光度法和氧电极法对比研究了α-氨基酸(N/O型)、α-氨基醇(N/O型)、羟基多元羧酸(O/O型)和多胺(N/N型)这4类不同双/多齿配体的Co(Ⅱ)配合物的氧合性能及其氧合反应的可逆性.结果表明, O/O型含羟基的羧酸Co(Ⅱ)配合物无氧合性能; N/N型多胺Co(Ⅱ)配合物有强吸氧性, 但氧合反应不可逆; N/O型配体的Co(Ⅱ)配合物的氧合性能差异较大, 其中α-氨基酸Co(Ⅱ)配合物具有明显的可逆氧合性能, 而含1个—OH的α-氨基醇Co(Ⅱ)配合物没有吸氧能力, 含有2个—OH的α-氨基醇Co(Ⅱ)配合物有微弱的吸氧能力但氧合反应不可逆.分析探讨了N/O型配体中—OH和—COOH对Co(Ⅱ)配合物可逆吸氧性能影响的机理, 根据实验结果初步认为α-氨基酸配位结构是Co(Ⅱ)配合物具有可逆吸氧性能的基本配位结构单元.

关键词: 双/多齿配体, 钴配合物, 吸氧性能, α-氨基酸, 氧载体

Abstract:

In this paper, the influences of the reversible oxygenation performances of Co(Ⅱ) complexes with different ligands have been investigated in aqueous solution at room temperature. Four types of bi-/polydentate ligands, such as α-amino acids(N/O type), α-amino alcohols(N/O type), polyamine(N/N type) and multi-carboxylic acids(O/O type), have been selected to conduct a comparative research, and the oxygenation performances have been determined via UV-Vis spectrophotometry and oxygen electrode. The results showed that the cobalt(Ⅱ) complexes of O/O type polydentate ligands had no oxygenation properties; the complexes of N/N type bidentate ligands were proved to have strong capability to uptake oxygen, while the oxygenation process was irreversible. Great differences of oxygenation performance between α-amino acids Co(Ⅱ) complexes and α-amino alcohols Co(Ⅱ) complexes have been found:α-amino acids Co(Ⅱ) complexes exhibited reversible oxygenation performance, however, the Co(Ⅱ) complexes of α-amino alcohols with one hydroxy group displayed no oxygenation, but the complexes of α-amino alcohols with two hydroxy groups could absorb oxygen weakly while the process was irreversible. Meanwhile the mechanism of reversible oxygenation performance of Co(Ⅱ) complexes that containing —OH and —COOH groups in N/O type bidentate ligand were analyzed and studied. It can be estimated that the group of α-amino acid is the basic coordination structure unit of the Co(Ⅱ) complexes which have the reversible oxygenation performance.

Key words: Bi-/poly-dentate ligand, Cobalt(Ⅱ) complex, Oxygenation performance, α-Amino acid, Oxygen carrier

中图分类号: 

TrendMD: