Abstract
Three novel transition metal coordination polymers, [Ni(C18H16N3O2)2·2CH3OH] n (1), [Zn(C18H16N3O2)2·4CH3OH] n (2) and [Cd(C18H16N3O2)2·2CH3OH] n (3) (C18H16N3O2=2-acetylpyridine-d-tryptophan) were synthesized and characterized by elemental analysis, IR, UV, 1H NMR and X-ray diffraction single crystal analysis. The analyses of the structures indicate that all three materials crystallize in the tetragonal crystal system, space group P41212. They have similar structures; i.e., the Schiff base coordinates in its deprotonated form and behaves as a hexadentate (4N+2O) coordinated ligand to form a distorted octahedron geometry. On the other hand, as a result of the alternate arrangement of chains through N–H···O intermolecular hydrogen bonds interactions, 2-D layers are formed for the three complexes. Furthermore, the luminescent properties and thermal stabilities of the three complexes were investigated.
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Acknowledgments
This research was supported by the National Natural Science Foundation of China to C. F. Bi (Nos. 21071134 and 21371161) and to Y. H. Fan (No. 20971115), the Specialized Research Fund for the Doctoral Program of Higher Education of China to Y. H. Fan (No. 20120132110015), the Natural Science Foundation of Shandong Province to X. Zhang (No. ZR2012BQ026), the Special Foundation for Young Teachers of Ocean University of China to X. Zhang (No. 201113025) and a scholarship from Chinese Scholarship Council to N. Zhang.
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Zhang, N., Fan, YH., Bi, CF. et al. Synthesis, Crystal Structure, Fluorescence and Thermostability of Ni(II), Zn(II), Cd(II) Complexes with Schiff Base 2-Acetylpyridine-d-tryptophan. J Inorg Organomet Polym 23, 1492–1500 (2013). https://doi.org/10.1007/s10904-013-9954-2
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DOI: https://doi.org/10.1007/s10904-013-9954-2