1D zigzag chain and 0D monomer Cd(II)/Zn(II) compounds based on flexible phenylenediacetic ligand: Synthesis, crystal structures and fluorescent properties
✍ Scribed by Fang Yang; Yixia Ren; Dongsheng Li; Feng Fu; Guangcai Qi; Yaoyu Wang
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 793 KB
- Volume
- 892
- Category
- Article
- ISSN
- 0022-2860
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✦ Synopsis
Three novel Cd(II)/Zn(II) compounds, [Cd 2 (poda) 2 (phen) 3 (H 2 O)] n ÁnEtOHÁ3nH 2 O(1), [Zn(poda) 2 (bpy) (H 2 O)] n (2) and Zn(Hpoda) 2 (bpy) (H 2 poda = 1,2-phenylenediacetic acid, phen = 1,10-phenanthroline, bpy = 2,2 0 -bipyridyl), have been synthesized and characterized by IR, TG, fluorescent spectrum and single-crystal X-ray diffraction techniques. In 1, poda 2À anions link the adjacent Cd(II) centers to generate a 1D zigzag chain. Furthermore, an unprecedented four-footed ''8-shaped" mixed water-ethanol (H 2 O) 6 (C 2 H 5 OH) 2 cluster connects four double chains based on 1D zigzag chain into 3D supramolecular architecture. By bis(chelate-monodentate) fashion of poda 2À ligand, compound 2 exhibits 1D zigzag chains, which forming a dense zipper-like 2D structure via strong p-p stacking interactions. Differed from 1 and 2, compound 3 has a mononuclear motif, and displays a 3D 6-connected a-Po net hydrogen-bonded topology.
The structure-related solid-state fluorescence spectra of compounds 1 and 2 have been determined.