物理化学学报 >> 2006, Vol. 22 >> Issue (11): 1377-1382.doi: 10.1016/S1872-1508(06)60070-3

研究论文 上一篇    下一篇

两个新颖的1,10-菲罗啉衍生物的合成及其金属配合物在水溶液中热力学稳定性的研究

王蕊;林海;林华宽   

  1. 南开大学化学系, 天津 300071; 南开大学吸附与分离功能高分子材料教育部重点实验室, 天津 300071
  • 收稿日期:2006-05-10 修回日期:2006-07-13 发布日期:2006-11-06
  • 通讯作者: 林华宽 E-mail:hklin@nankai.edu.cn

Studies on the synthesis of two novel derivants of 1,10-phenanthroline and the thermodynamic stability of their metal complexes in aqueous solution

WANG Rui;LIN Hai;LIN Hua-Kuan   

  1. Department of Chemistry, Nankai University, Tianjin 300071, P. R. China; Key Laboratory of Functional Polymer Materials for Adsorption and Separation of Ministry of Education, Nankai University, Tianjin 300071, P. R. China
  • Received:2006-05-10 Revised:2006-07-13 Published:2006-11-06
  • Contact: LIN Hua-Kuan E-mail:hklin@nankai.edu.cn

摘要: 合成并表征了两个长链多齿配体2,9-二-(n-2′,5′,8′-三氮杂壬烷基)-1,10-菲罗啉(L1)和2,9-二-(n-4′,7′,10′-三氮杂十一烷基)-1,10-菲罗啉(L2). 研究了该配体及其与过渡金属离子和稀土金属离子配合物的热力学性质. 配体和金属离子的配位比都是1?1. 对两个系列配合物的规律性及其差异以及对结果的影响因素也进行了研究. 结果表明, 所研究的稀土配合物都具有能催化水解生物大分子的11-1物种. 此性质表明它们是潜在的切割DNA和磷酸二酯水解酶的良好模型物.

关键词: 1,10-菲罗啉, 过渡金属离子, 稀土金属离子, 稳定常数

Abstract: Two long-chain multidentate ligands, 2,9-di(n-2′,5′,8′-triazanonyl)-1,10-phenanthroline (L1) and 2,9-di(n-4′,7′,10′-triazaundecyl)-1,10-phenanthroline (L2), were synthesized and characterized using 1H NMR and elemental analysis. The thermodynamic properties of the ligands and their complexes with transition metal ions and rare earth metal ions were investigated using potentiometric titrations. The coordination capabilities of the ligands with the transition metal ions followed the Irving-William sequence: Co(II)Zn(II). The stability constants of the ligands with the rare earth metal ions increase from La(III) to Gd(III). The coordination ratio of the ligands and the metal ions is 1?1. The similarities and the differences between the two series of complexes were studied. In addition, the factors influencing the results were researched. The results of this study indicate that all rare earth complexes in this study have the species 11-1, which can catalyze the hydrolysis of biological macromolecules. This property means that they are potentially useful as a good model of hydrolysis enzyme that has the capacity to cleave DNA and diester phosphate.

Key words: 1,10-phenanthroline, Transition metal ion, Rare earth metal ion, Stability