高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (3): 493.

• 研究论文 • 上一篇    下一篇

氮-[双(2-吡啶)甲基]吡啶-2-甲酰胺金属配合物的热力学稳定性研究

高东昭, 郭延河, 朱守荣, 林华宽, 许新合   

  1. 南开大学化学系, 天津 300071
  • 收稿日期:2003-01-07 出版日期:2004-03-24 发布日期:2004-03-24
  • 通讯作者: 朱守荣(1962年出生),男,博士,教授,从事配位化学研究.E-mail;gdzhao_nk@eyou.com E-mail:gdzhao_nk@eyou.com
  • 基金资助:

    国家教育部外事司留(01)345项目资助

Thermodynamic Stability Studies on the N-[Bis(2-pyridyl)methyl] pyridine-2-carboxamide Metal Complexes

GAO Dong-Zhao, GUO Yan-He, ZHU Shou-Rong, LIN Hua-Kuan, XU Xin-He   

  1. Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2003-01-07 Online:2004-03-24 Published:2004-03-24

摘要: 利用简单步骤合成了酰胺类配体氮-[双(2-吡啶)甲基]吡啶-2-甲酰胺(L),在25℃,I=0.1mol/LKNO3的30%乙醇-水溶液中用pH滴定法测定了其与不同金属离子组成的二元和三元配合物的稳定常数,结合单晶结构讨论了物种的可能构型,并比较了配体与Cu()和Fe()形成配合物的热力学稳定性差异,发现此配体在三元体系中存在线性自由能关系.

关键词: 酰胺, 配合物, 热力学稳定性, 线性自由能关系

Abstract: N [Bis(2 pyridyl)methyl]pyridine 2 carboxamide was synthesized and characterized. At25 ℃, I =0.1 mol/L KNO3, the stability constants of the binary and ternary systems formed by the ligand with metal ions in ethanol aqueous solution were studied by pH titrations and the appropriate structures with respect to the titration species were proposed according to the literature and the obtained data. Furthermore we also investigated the thermodynamic stability difference between the copper and iron complexes. The results show that a good linear free energy relationship exists in the ternary systems.

Key words: Carboxamide, Complex, Thermodynamic stability, Linear free energy relationship

中图分类号: 

TrendMD: