Solid-state 2-methoxybenzoates of light trivalent lanthanidesSynthesis, characterization and thermal behaviour

被引：0
|
作者：
A. B. Siqueira
G. Bannach
E. C. Rodrigues
C. T. Carvalho
M. Ionashiro
机构：
[1] UNESP,Instituto de Química
来源：
Journal of Thermal Analysis and Calorimetry | 2008年 / 91卷
关键词：
light trivalent lanthanides; 2-methoxybenzoate; thermal decomposition; thermal stability;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Solid-state LnL3 compounds, where L is 2-methoxybenzoate and Ln is light trivalent lanthanides, have been synthesized. Thermogravimetry (TG), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy and elementary analysis were used to characterize and to study the thermal behaviour of these compounds. The results led to information on the composition, dehydration, thermal stability and thermal decomposition of the isolated compounds. On heating these complexes decompose in three (Ce, Pr) or five (La, Nd, Sm) steps with the formation of the respective oxide: CeO2, Pr6O11 and Ln2O3 (Ln=La, Nd, Sm) as final residues. The theoretical and experimental spectroscopic study suggests predominantly the ionic bond between the ligand and metallic center.
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页码：897 / 902
页数：5
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