Publication Date:
2015-12-22
Description:
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 (H 2 datza)], namely a mononuclear structure [La(pztza) 2 (H 2 O) 5 ] · 4H 2 O · pztza ( 1 ), a 1D polymeric chain structure [La 2 (atzp) 4 (H 2 O) 8 ] · 2NO 3 · 2H 2 O ( 2 ), and a 2D layer network [La(datza)(H 2 O) 3 ] · 4H 2 O ( 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.
Print ISSN:
0044-2313
Electronic ISSN:
1521-3749
Topics:
Chemistry and Pharmacology
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