| 2-十四烷基-DTPA及其钆(Ⅲ)螯合物的合成与表征(英) |
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| 引用本文： | 冯志明,李 峰,朱小娟,陈 蓉,李晓如.2-十四烷基-DTPA及其钆(Ⅲ)螯合物的合成与表征(英)[J].无机化学学报,2004,20(5):547-550. |
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| 作者姓名： | 冯志明 李 峰 朱小娟 陈 蓉 李晓如 |
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| 作者单位： | 1. 湖南师范大学化学化工学院,长沙,410081
2. 中南大学化学化工学院,长沙,410083 |
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| 基金项目： | 湖南省科技厅资助项目(No.OOSSY1013鄄51)。 |
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| 摘 要： | Synthesis and characterization of the ligand, 2-tetradecyl-3,6,9-tris(carboxymethyl)-3,6,9-triazaundecan-1,11-dioic acid, H5L] and its Gd(Ⅲ) chelate are described. Protonation constants for H5L (lgKiH = 10.80, 8.40, 4.30, 2.80, 2.15) and the stability constant for GdL2- (lgKGdL2-= 22.75) were determined by potentiometric titration and are similar with the related values of DTPA and Gd-DTPA respectively. The results obtained show that the basicity of the ligand and the stability constant of its Gd(Ⅲ) chelate are not obviously altered after introduction of a linear chain tetradecyl group at the terminal acetic acid residue of DTPA.
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| 关 键 词： | 钆(Ⅲ)螯合物 DTPA衍生物 稳定性 |
Synthesis and Characterization of 2-Tetradecyl-DTPA and Its Gd(Ⅲ) Chelate |
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| FENG Zhi-Ming,LI Feng,ZHU Xiao-Juan,CHEN Rong and LI Xiao-Ru.Synthesis and Characterization of 2-Tetradecyl-DTPA and Its Gd(Ⅲ) Chelate[J].Chinese Journal of Inorganic Chemistry,2004,20(5):547-550. |
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| Authors: | FENG Zhi-Ming LI Feng ZHU Xiao-Juan CHEN Rong and LI Xiao-Ru |
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| Institution: | College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081,College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081,College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081,College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081 and College of Chemistry and Chemical Engineering, Centralsouth University, Changsha 410083 |
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| Abstract: | Synthesis and characterization of the ligand, 2-tetradecyl-3,6,9-tris(carboxymethyl)-3,6,9-triazaundecan-1,11
dioic acid, H5L] and its Gd(Ⅲ) chelate are described. Protonation constants for H5L (lgKiH = 10.80, 8.40, 4.30,
2.80, 2.15) and the stability constant for GdL2- (lgKGdL2-= 22.75) were determined by potentiometric titration and
are similar with the related values of DTPA and Gd-DTPA respectively. The results obtained show that the basic
ity of the ligand and the stability constant of its Gd(Ⅲ) chelate are not obviously altered after introduction of a lin
ear chain tetradecyl group at the terminal acetic acid residue of DTPA. |
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| Keywords: | Gd(Ⅲ) chelate DTPA derivative stability |
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