Journal of Thermal Analysis and Calorimetry

, Volume 107, Issue 2, pp 527–533 | Cite as

The effect of water molecule on the thermal stability of lanthanide compounds with 1,3-benzeneditetrazol-5-yl

  • Cheng-Fang Qiao
  • Qing Wei
  • Zheng-Qiang Xia
  • Chun-Sheng Zhou
  • San-Ping Chen


Six lanthanide compounds [Ln(H2O)9](m-BDTH)3·9(H2O) where Ln = La (1), and [Ln(H2O)8](m-BDTH)3·9(H2O) (m-BDTH2 = 1,3-benzeneditetrazol-5-yl) where Ln = Lu (2), Yb (3), Er (4), Ho (5) and Y (6) were hydrothermally synthesized and characterized by elemental analyses, infrared spectra, powder X-ray diffraction (PXRD) and X-ray single crystal diffraction. PXRD indicates that 26 are isomorphous. Structural analyses reveal that 1 is coordinated by nine water molecules forming a capped-square antiprism, while 26 are coordinated by eight water molecules forming a simple square antiprismatic geometry. Effects of water molecules on thermal stability were also discussed by thermogravimetric (TG), DSC, and PXRD under different temperatures. TG analyses suggest that 1 loses lattice and coordinated water molecules with no diacritical boundary, and 6 removes lattice water molecules first and then coordinated water molecules. DSC and PXRD further confirm the consequence.


Intermolecular interaction Lanthanide compound 1,3-Benzeneditetrazol-5-yl Thermal stability 



We gratefully acknowledge the financial support from the National Natural Science Foundation of China (grant no. 20873100), and the Nature Science Foundation of Shaanxi Province (grant nos. FF10091 and SJ08B09).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Cheng-Fang Qiao
    • 1
    • 2
  • Qing Wei
    • 1
  • Zheng-Qiang Xia
    • 1
  • Chun-Sheng Zhou
    • 2
  • San-Ping Chen
    • 1
  1. 1.Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials ScienceNorthwest UniversityXi’anChina
  2. 2.Department of ChemistryShangluo UniversityShangluoChina

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