Coordination Architectures of Lanthanum Complexes Based on Bifunctional 5‐Substituted Tetrazolecarboxylate Ligands |
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| Authors: | Lei Shen Yu‐Ting Min Jing Wang Yue Xu Hong‐Jian Chen Jie Yang Xi Zhang Mu‐Lan Wu Gao‐Wen Yang Bo Wei |
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| Affiliation: | Jiangsu Laboratory of Advanced Functional Materials, Department of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, Jiangsu, P. R. China |
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| Abstract: | Three complexes of bifunctional 5‐substituted tetrazolatecarboxylate ligands [2‐(5‐(pyrazin‐2‐yl)‐2H‐tetrazol‐2‐yl)acetic acid (Hpztza), 3‐(5‐amino‐2H‐tetrazol‐1(5H)‐yl)propanoic acid (Hatzp), and N,N′‐bis(tetrazol‐5‐yl)anime‐N2,N2′‐diacetic acid (H2datza)], namely a mononuclear structure [La(pztza)2(H2O)5] · 4H2O · pztza ( 1 ), a 1D polymeric chain structure [La2(atzp)4(H2O)8] · 2NO3 · 2H2O ( 2 ), and a 2D layer network [La(datza)(H2O)3] · 4H2O ( 3 ) were prepared and structurally characterized by elemental analysis, IR spectroscopy, and single‐crystal X‐ray diffraction. The structures of these complexes are controlled not only by the number and different coordination modes of the tetrazole‐carboxylate ligands but also the different 5‐substituents of the tetrazole ring. The complexes show ligand‐centered luminescence at room temperature in the solid state. The obvious enhancements in luminescence make these complexes to be the potential materials for optical use. |
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| Keywords: | Tetrazole‐carboxylate ligands Lanthanum Coordination modes Crystal structure |
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