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Z. Naturforsch. 2012,
67b, 774 – 782
doi:10.5560/ZNB.2012-0170
Syntheses, Structures, Thermal and Photoluminescence Properties of Two Zn(II) and Cd(II) Coordination Polymers Constructed from Taurine-derived Schiff Base and 4,4'-Bipyridine Ligands
Gout Laboratory, The Affiliated Hospital of Medical College Qingdao University, 16 Jiangsu Road, Qingdao 266003, P. R. China
Reprint requests to Prof. Dr. Yun-Long Wang and Zhi-Min Miao. E-mail:
wangyunlongqd@163.com and
miao_zhimin@126.com
Received June 15, 2012 / published online August 20, 2012
Two chain-like coordination polymers, namely, {[Zn(saes)(4,4'-bipy)(H2O)]·H2O}n (1) and {[Cd(Hsaes)2(4,4'-bipy)(H2O)2]·2H2O}n (2), where H2saes = 2-(2-hydroxybenzylideneamino)ethanesulfonic acid and 4,4'-bipy = 4,4'-bipyridine, have been synthesized and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental, thermogravimetric and photoluminescence analysis. X-Ray diffraction analyses indicate that 1 and 2 display octahedral metal centers with N3O3 and N2O4 donor sets, respectively. The Schiff base serves as a common N,O,O'-tridentate ligand in 1, and as a unique O-monodentate ligand in 2. In the crystal, both 1 and 2 form a 3D supramolecular architecture by O–H···O, C–H···O interactions or π···π stacking. The thermal and solid-state photoluminescence properties of both complexes have been investigated.
Key words: Coordination Polymer, Luminescence Properties, 4,4'-Bipyridine, Taurine Schiff Base, Crystal Structure