Structure characterization of several oxalate-bridged transition-metal coordination polymers
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- 作者：Jie-Hui Yu ; Qin Hou ; Ming-Hui Bi ; Zheng-Liang Lü ; Xiao Zhang ; Xue-Jian Qu ; Jing Lu ; Ji-Qing Xu
- 关键词：Oxalate ; Aromatic N-donor ligand ; Molecular structure ; Hydrothermal synthesis
- 刊名：Journal of Molecular Structure
- 出版年：2006
- 出版时间：4 December 2006
- 年：2006
- 卷：800
- 期：1-3
- 页码：69-73
- 全文大小：534 K
文摘
Four oxalate-bridged transition-metal supramolecular compounds [Co2(im)4(ox)2] 1, [Co(im)2(ox)] 2, [Mn(2,2′-bpy)(ox)] 3 and [Fe(H2O)2(ox)] 4 (im, imidazole; ox, oxalate; bpy, bipyridine) were obtained from the simple hydrothermal reactions of Mn+oxL (M, transition metal; L, aromatic N-donor ligand) system. They all exhibit the 1-D chain structures, consisting of the (or ML2+) units linked by oxalate bridges. Interestingly, the 1-D oxalate chains in the title compounds are further self-assembled into the 3-D supramolecular networks through the interchain various secondary bonding interactions. Because the units adopt the different configuration, the oxalate chains show either zigzag type as in compounds 1–3 or linear type as in compound 4. Compounds 1 and 2 are isomeric, and only in packing modes of interchain im molecules there exists the difference.