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Citation: MA Bao-Cheng, MA Xing-Ming, YAN Lan, YANG Ru-Dong. Synthesis, and Bacteriostatic Activity of 2-(Carboxymethoxyl)benzaldehyde Benzoyl hydrazone and Its Rare Earth Complexes[J]. Chinese Journal of Applied Chemistry, ;2004, 21(8): 841-843. shu

Synthesis, and Bacteriostatic Activity of 2-(Carboxymethoxyl)benzaldehyde Benzoyl hydrazone and Its Rare Earth Complexes

1.
a College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000;
2.
b Lanzhou Medical College, Lanzhou

Corresponding author: YANG Ru-Dong,
Received Date: 29 September 2003
Available Online: 21 January 2004

The 2-(carboxymethoxyl)benzaldehyde benzoyl hydrazone(H₂L) was prepared by condensation of O-formylphenoxy acetic acid with benzoyl hydrazine in ethanol. Eight rare earth complexes with H₂ were synthesized in methanol and characterized by elemental analysis, IR, ¹H NMR, EI-MS and molar conductivity measurement. The results indicated the molecular formula of H₂L is C₁₆H₂₄N₂O₄ and the composition of rare earth complexes is REL₃·nH₂O(where n=1~2, RE=La, Sm, Eu, Gd, Tb, Dy, Yb and Y). The H₂L as a tridentate ligand coordinates with rare earth ion and forms nine-coordination complexes. The K-B method tests showed the title complexes only have a low bacteriostatic activity against staphylocus auteus, escherichia coil and bacillus subtilis.
- rare earth,
- benzoyl hydrazone derivative,
- complex,
- bacteriostatic activity
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