Synthesis, crystal structure, and thermal decomposition kinetics of complex [Nd(BA)3bipy]2

H. Ye; N. Ren; H. Li; J. Zhang; S. Sun; L. Tian

doi:10.1007/s10973-009-0428-2

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Journal of Thermal Analysis and Calorimetry

Volume/Issue:: Volume 101: Issue 1

Synthesis, crystal structure, and thermal decomposition kinetics of complex [Nd(BA)₃bipy]₂

Authors: H. Ye, N. Ren³, H. Li⁴, J. Zhang¹, S. Sun, and L. Tian

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¹ Hebei Normal University Experimental Center Shijiazhuang 050016 People’s Republic of China
² Hebei Normal University College of Chemistry and Material Science Shijiazhuang 050016 People’s Republic of China
³ Handan College Department of Chemistry Handan 056005 People’s Republic of China
⁴ Shijiazhuang College Shijiazhuang 050035 People’s Republic of China

DOI:: https://doi.org/10.1007/s10973-009-0428-2

Page Count:: 205–211

Publication Date:: 01 Jul 2010

Online Publication Date:: 19 Sep 2009

Article Category:: Research Article

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Abstract

The complex of [Nd(BA)₃bipy]₂ (BA = benzoic acid; bipy = 2,2′-bipyridine) has been synthesized and characterized by elemental analysis, IR spectra, single crystal X-ray diffraction, and TG/DTG techniques. The crystal is monoclinic with space group P2(1)/n. The two–eight coordinated Nd³⁺ ions are linked together by four bridged BA ligands and each Nd³⁺ ion is further bonded to one chelated bidentate BA ligand and one 2,2′-bipyridine molecule. The thermal decomposition process of the title complex was discussed by TG/DTG and IR techniques. The non-isothermal kinetics was investigated by using double equal-double step method. The kinetic equation for the first stage can be expressed as dα/dt = A exp(−E/RT)(1 − α). The thermodynamic parameters (ΔH^≠, ΔG^≠, and ΔS^≠) and kinetic parameters (activation energy E and pre-exponential factor A) were also calculated.