| Synthesis,spectroscopic characterization,and thermal decomposition kinetics of some lanthanide（Ⅲ） nitrate complexes of 2-（N-o-hydroxyacetophenone） amino-3-carboxyethyl-4,5,6,7-tetrahydrobenzo[b]thiophene |
| |
| 作者姓名： | K. Mohanan M. Thankamony B. Sindhu Kumari |
| |
| 作者单位： | Department of Chemistry, University of Kerala, Kariavattom Campus, Trivandrum- 695 581. Kerala, India |
| |
| 基金项目： | Acknowledgements： We express our sincere thanks to Prof. Dr. P. Indrasenan, Dean, Faculty of Science and Prof. Dr. K.N. Rajasekharan, Head of the Department of Chemistry, University of Kerala, Kariavattom Campus, Trivandrum, for providing me with necessary facilities for carrying out this work successfully. Instrumental facilities provided by Sophisticated Analytical Instrument Facility （SAIF）; Cochin, liT, Bombay and Regional Research Laboratory, Trivandrum are gratefully acknowledged. One of the authors （MT） is grateful to the University Grants Commission, New Delhi for their financial support. |
| |
| 摘 要： | Complexes of La（Ⅲ）, Ce（Ⅲ）, Pr（Ⅲ）, Nd（Ⅲ）, Sm（Ⅲ）, Eu（Ⅲ）, Gd（Ⅲ）, Dy（Ⅲ）, Yb（Ⅲ）, and Lu0ID with 2-（N-o- hydroxyacetophenone）amino-3-carboxyethyl-4,5,6,7-tetrahydrobenzob]thiophene （HAAT） formed by the condensation of o-hydroxyacetophenone and 2-amino-3-carboxyethyl-4,5,6,7-tetrahydrobenzob]thiophene were synthesized and characterized on the basis of elemental analyses, molar conductance measurements, magnetic susceptibility data, UV-Visible, IR, and NMR spectral studies. The spectral data revealed that the ligand acted as a neutral tridentate coordinating to the metal ion through ONO donor sequence. A coordination number nine was proposed for the complexes. Thermal decomposition studies of the ligand and lanthanum（Ⅲ） complex were carried out and kinetic parameters were calculated using Coats-Redfem equation. The decomposition reactions followed random nucleation mechanism with one nucleus on each particle.
|
| 关 键 词： | 镧 热分解 硝酸盐 摩尔电导 磁化率 稀土 |
| 本文献已被 维普 等数据库收录！ |
|
