- 作者: Atef A. Taha; Gaber A. El-Inany
- 作者服務機構: Chemistry Department, Faculty of Education, Ain-Shams University Cairo (Egypt)
- 中文摘要:
The overall stability constants of the 1:1 and 2:1 2-Carboxyphenylhydrazoacetoacetanilide (2-CPHBA) rate-earth chelates, were determined by a potentiometric method. The variation of the overall stability constants, “log β” with atomic number, of the lanthanide was ascribed to different degrees of dehydration of the cations. The 2-CPHBA ligand exhibited less affinity for rare earth cations than 2-CPHAAA.
The correlation of “log β” versus the basicity of the ligands showed that 2-CPHAAA and 2-CPHBA form the same type of chelate in polar solvents but differ in non polar solvents. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --