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Syntheses, Structures and Optical Properties of a Series of Lanthanide Complexes with Chelidamic Acid and 4,4′-Bipyridyl

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Abstract

The title complexes, (C10H8N2)·[Y(C7H3NO5)(C7H4NO5)·2H2O]·3H2O (1), (C10H8N2)·[Er(C7H3NO5)(C7H4NO5)·2H2O]·3H2O (2), (C10H8N2)·[La(C7H3NO5)(C7H4NO5)·2H2O]·4.5H2O (3), (C10H8N2)·[Sm(C7H3NO5)(C7H4NO5)·2H2O]·4.75H2O (4), (C10H8N2)·[Pr(C7H3NO5)(C7H4NO5)·2H2O]·4.75H2O (5) were synthesized and characterized by X-ray single-crystal diffraction. The crystal structures of 1–2 reveal that they are isomorphous, among which the metal atoms are all eight-coordinate with a distorted dodecahedron coordination geometry. The structures of 3–5 are isomorphic, among which the metal atoms are all nine-coordinate with distorted tricapped trigonal prismatic coordination geometries by two chelidamic acid ligands. Complexes 1–5 are formed into 3D networks by H-bonds. The optical properties of 1–5 were investigated in terms of fluorescent spectra, which all exhibit strong luminescence.

Graphical Abstract

The title complexes were synthesized and characterized by X-ray single-crystal diffraction. The crystal structures of 1–2 reveal that they are isomorphous, among which the metal atoms are all eight-coordinate with a distorted dodecahedron coordination geometries. The structures of 3–5 are isomorphic, among which the metal atoms are all nine-coordinate with distorted tricapped trigonal prismatic coordination geometries. All complexes are formed into 3D networks by H-bonds and π-π stacking interactions. The optical properties of 1–5 were investigated in terms of fluorescent spectra, which all exhibit strong luminescence.

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Acknowledgments

We gratefully acknowledge the financial support of the NSF of China (20801026), the NSF of Jiangxi Province (2008GQC0036), the Aviation Science Foundation of china (2008ZF56012), Science Foundation of State Key Laboratory of Structural Chemistry (20100015), and Open Fund of the Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University (ZD200929007).

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Authors and Affiliations

  1. Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang, 330063, Jiangxi, People’s Republic of China

    Jian-Ping Zou, Mei-Hong Chen, Long-Zhu Zhang, Qiu-Ju Xing & Zhi-Qiang Xiong

  2. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, Fujian, People’s Republic of China

    Jian-Ping Zou

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  1. Jian-Ping Zou
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  2. Mei-Hong Chen
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Correspondence to Jian-Ping Zou.

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Zou, JP., Chen, MH., Zhang, LZ. et al. Syntheses, Structures and Optical Properties of a Series of Lanthanide Complexes with Chelidamic Acid and 4,4′-Bipyridyl. J Chem Crystallogr 41, 1820–1833 (2011). https://doi.org/10.1007/s10870-011-0179-3

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