Determination of Coordination Configuration of Rare Earth Ionswith Aminoacids in Solutions with Cooperative Vibronic Spectroscopy
来源期刊：JOURNAL OF RARE EARTHS2000年第1期
论文作者：LI Run-hua ZHOU Dai-jun MENG Jian-xin ZHOU Jian-ying ZENG Xue-ran
Key words：rare earths; coordination configuration; aminoacid; cooperative vibronic spectroscopy;
Abstract: The use of cooperative vibronic spectroscopy to measure coordination numbers of the ligands surrounding rare earth ions in solutions was proposed and demonstrated. It is shown that the time-resolved cooperative vibronic spectroscopy is a very useful technique for the determination of the ligand type and ligand number for different coordination groups. Coordination configuration of arginine with Tb3+ in solutions with different pH values was studied. It demonstrates that the carboxyl of arginine can replace H2O to coordinate with Tb3+ and the coordination number of carboxyl increases with the increase of pH value of the solutions.
LI Run-hua1，ZHOU Dai-jun1，MENG Jian-xin1，ZHOU Jian-ying1，ZENG Xue-ran1
(1.State Key Laboratory of Ultrafast Laser Spectroscopy, Zhongshan University, Guangzhou 510275, China)
Abstract:The use of cooperative vibronic spectroscopy to measure coordination numbers of the ligands surrounding rare earth ions in solutions was proposed and demonstrated. It is shown that the time-resolved cooperative vibronic spectroscopy is a very useful technique for the determination of the ligand type and ligand number for different coordination groups. Coordination configuration of arginine with Tb3+ in solutions with different pH values was studied. It demonstrates that the carboxyl of arginine can replace H2O to coordinate with Tb3+ and the coordination number of carboxyl increases with the increase of pH value of the solutions.
Key words:rare earths; coordination configuration; aminoacid; cooperative vibronic spectroscopy;
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