高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 300.

• 论文 • 上一篇    下一篇

稀土元素与L-酪氨酸和甘氨酸三元固态配合物的合成及表征

刘景心, 段莉梅, 孙元洪   

  1. 内蒙古大学化学系, 呼和浩特, 010021
  • 收稿日期:1991-04-23 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 刘景心
  • 基金资助:

    国家自然科学基金

Synthesis and Characterization of the Solid Ternary Complexes of Rare Earths with L-Tyrosine and Glycine

LIU Jing-xin, DUAN Li-mei, SUN Yuan-hong   

  1. Department of Chemistry, Inner Mongolia University, Huhehot, 010021
  • Received:1991-04-23 Online:1992-03-24 Published:1992-03-24

关键词: 稀土配合物, L-酪氨酸, 甘氨酸

Abstract: The title complexes Ln(Tyr)(Gly)3Cl3·3H2O(Ln = La-Ho, except Pm) were synthesized.The mass spectra of gadolinium complex, in which the strongest peak (m/e=612) was assigned to [Gd155(Tyr)(NH2CH2COO)3·3H2O]+, further support the formation of the ternary complexes.In FTIRspectra, vas,COO- shifts to higher frequencies after the coordination (the heavy rare earth complexes shifted by 17~19 cm-1), but the shifting of vs,COO- is smaller.Two new absorption bands at 390 cm-1 (strong) and 443 cm-1(weak) are attributed to Ln-O and Ln-OH2 stretching vibration, respectively.These results indicate that the carboxylate ions coordinate to the rare earths as an unsymmetrical bridging bidentate ligand.

Key words: Rare earth complex, L-Tyrosine, Glycine

TrendMD: