摘要
合成了2个新型的多齿配体:2,9-二-[1'-(2″-苯并咪唑基)-2'-氮杂-正丙基]-1,10-菲罗啉(L1)和2,9-二-[2'-(2″-苯并咪唑基)-3'-氮杂-正丁基]-1,10-菲罗啉(L2)并且用元素分析和1HNMR谱作了表征。在25±0.1℃,运用pH电位滴定法对这2个新的配体及其与过渡金属离子M髤(M=Co,Ni,Cu,Zn)和稀土金属离子Ln髥(Ln=La,Nd,Sm,Eu,Gd)的配合物进行了热力学稳定性研究。结果表明配体和金属离子的配位比为1∶1,但是,这2个系列的配合物在稳定性方面存在很大差异。
Two novel muhidentate ligands: 2,9-bis-[1′-(2″-benzimidazolyl)-2′-aza-n-propyl]-1,10-phenanthroline (L1) and 2,9-bis-[2′-(2"-benzimidazolyl)-3′-aza-n-butyl]-1,10-phenanthroline (L2) were synthesized and characterized by elemental analysis and ^1H NMR spectroscopy. The thermodynamic properties of the ligands and their complexes with transition metal ions M(Ⅱ) (M=Co, Ni, Cu and Zn) and rare earth metal ions Ln(Ⅲ) (Ln=La, Nd, Sm, Eu, Gd) have been investigated at 25 ± 0.1 ℃ using pH titration. The results show that the coordination ratio of the ligands to the metal ions is 1:1. However, there is great difference in stabilities between two series of complexes.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2006年第9期1651-1656,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.20371028)
天津市自然科学基金(No.023605811)资助项目。
关键词
1
10-菲罗啉
过渡金属
稀土
稳定常数
1,10-phenanthroline
transition metal
rare earth
stability constant