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| Synthesis, fluorescence, and magnetic characterization of nicotinic acid ligand-based dysprosium, holmium, erbium, and thulium complexes |
| Author Name | Affiliation | E-mail | | YU Lin-Tao | College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China | | | LI Qi-Yang | College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China | | | SHEN Zhi | College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China | | | Lü Wen-Jun | College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China | | | ZHAO Qiang | College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China | zhaoqiang0522@126.com |
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| Abstract: Four isomorphic rare earth complexes[M(Hcpna)(cpna)(H2O)3]n, where M=Dy (1), Ho (2), Er (3), Tm (4), have been synthesized by a solvothermal method based on 5-(4-carboxyphenoxy)nicotinic acid ligand (H2cpna) and rare earth metal ions Dy3+, Ho3+, Er3+, and Tm3+. Single crystal X-ray diffraction analyses reveal that complexes 1, 2, 3, and 4 are isostructural, and the structures are all 1D chain structures. The complexes were characterized by IR, elemental analysis, and powder X-ray diffraction, while the fluorescence and magnetic properties of the complexes were studied. The fluorescence test results show that the fluorescence intensity of complexes 1-4 were all lower than that of the H2cpna ligand. The magnetism of complexes 1-4 were studied in the 2-300 K range at 1 kOe dc field. The χmT values of complexes 1, 2, 3, and 4 were 14.04, 14.15, 11.08, and 6.83 cm3·mol-1·K respectively at room temperature. |
| Keywords: dysprosium（Ⅲ） holmium（Ⅲ） erbium（Ⅲ） thulium（Ⅲ） fluorescence magnetism |
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| YU Lin-Tao,LI Qi-Yang,SHEN Zhi,Lü Wen-Jun,ZHAO Qiang.Synthesis, fluorescence, and magnetic characterization of nicotinic acid ligand-based dysprosium, holmium, erbium, and thulium complexes[J].Chinese Journal of Inorganic Chemistry,2023,39(11):2181-2187. |
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