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Vol. 25 No. 6 (2013): Vol 25 Issue 6

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Synthesis and Thermal Decomposition Kinetics of Gd(III) Complex with Unsymmetrical Schiff Base Ligand

https://doi.org/10.14233/ajchem.2013.13624
Shuangyu Bi
Center for Theoretical Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Haidian District, Beijing 100871, P.R. China
Jian Zuo
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China
Nan Zhang
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China
Pengfei Zhang
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China
Zhen Zhang
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China
Yuhua Fan
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. China

Corresponding Author(s) : Yuhua Fan

fanyuhua301@163.com

Asian Journal of Chemistry, Vol. 25 No. 6 (2013): Vol 25 Issue 6

Abstract

A new unsymmetrical solid Schiff base (LLi) was synthesized using L-lysine, o-vanillin and 2-hydroxy-l-naphthaldehyde. Solid gadolinium(III) complex of this ligand [GdL(NO3)]NO3·2H2O has been prepared and characterized by elemental analyses, IR spectra, 1H NMR spectra, UV spectra and molar conductance. The thermal decomposition kinetics of the complex for the second stage was studied under non-isothermal condition by TG and DTG methods. The kinetic equation may be expressed as: da/dt = Ae-E/RT(1-a)2. The kinetic parameters (E, A), activation entropy DS¹ and activation free-energy DG¹ were also gained.

Keywords

Unsymmetrical Schiff base Gd(III) complex Thermal decomposition
Bi, S., Zuo, J., Zhang, N., Zhang, P., Zhang, Z., & Fan, Y. (2013). Synthesis and Thermal Decomposition Kinetics of Gd(III) Complex with Unsymmetrical Schiff Base Ligand. Asian Journal of Chemistry, 25(6), 3267–3270. https://doi.org/10.14233/ajchem.2013.13624
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