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Crystal structures, antibacterial activity and thermal decomposition kinetics of lanthanide complexes with 4-chloro-2-methoxybenzoic acid and 1,10-phenanthroline

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  • Physical Chemistry
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Chinese Science Bulletin

Abstract

A series of lanthanide complexes [Ln(4-Cl-2-MOBA)3phen]2 (Ln=Sm (1), Nd (2), Ho (3), Eu (4), Dy (5), and Tb (6); 4-Cl-2-MOBA=4-chloro-2-methoxybenzoate, phen=1,10-phenanthroline) were synthesized and characterized. The single-crystal X-ray diffraction demonstrates that 1–3 are isomorphous, which present dimeric structures with four 4-Cl-2-MOBA anions function as bridging ligands. Complexes 1 and 4–6 display their characteristic luminescence emission bands of central Ln3+ ions. The heat capacities, the thermodynamic functions and the thermogravimetry–Fourier transform infrared spectra of gaseous products of complexes 1–6 were investigated. Their non-isothermal kinetics of the second decomposition stage was studied by the integral isoconversional non-linear method and Stark method. Furthermore, 1–6 exhibited excellent antibacterial activity against Candida albicans, Escherichia coli and Staphylococcus aureu.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (21073053, 21173067 and 20773034) and the Natural Science Foundation of Hebei Province (B2012205022, B2011205037).

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Authors and Affiliations

  1. Testing and Analysis Center, Hebei Normal University, Shijiazhuang, 050024, China

    Ying-Ying Zhang & Jian-Jun Zhang

  2. Material Science and Engineering School, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China

    Shu-Xia Ren

  3. College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, China

    Jian-Jun Zhang & Shu-Ping Wang

  4. Department of Chemistry, Handan College, Handan, 056005, China

    Ning Ren

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  1. Ying-Ying Zhang
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  2. Shu-Xia Ren
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Correspondence to Jian-Jun Zhang.

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Zhang, YY., Ren, SX., Zhang, JJ. et al. Crystal structures, antibacterial activity and thermal decomposition kinetics of lanthanide complexes with 4-chloro-2-methoxybenzoic acid and 1,10-phenanthroline. Chin. Sci. Bull. 59, 3398–3405 (2014). https://doi.org/10.1007/s11434-014-0490-4

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  • DOI: https://doi.org/10.1007/s11434-014-0490-4

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