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| 题名: | Rare configuration of tautomeric benzimidazolecarboxylate ligands in cadmium(II) and copper(II) coordination polymers |
| 作者: | Wu, JY (Wu, Jing-Yun)
Yang, CW (Yang, Ciao-Wei)
Chen, HF (Chen, Hui-Fang)
Jao, YC (Jao, Yu-Chen)
Huang, SM (Huang, Sheng-Ming)
Tsai, C (Tsai, Chiitang)
Tseng, TW (Tseng, Tien-Wen)
Lee, GH (Lee, Gene-Hsiang)
Peng, SM (Peng, Shie-Ming)
Lu, KL (Lu, Kuang-Lieh) |
| 贡献者: | Dept Chem |
| 关键词: | METAL-ORGANIC FRAMEWORK
CRYSTAL-STRUCTURE
SUPRAMOLECULAR ISOMERISM
BUILDING-BLOCKS
PROTON-TRANSFER
HYDROGEN-BONDS
OPEN CHANNELS
COMPLEXES
NETWORK
ACID |
| 日期: | 2011-07 |
| 上传时间: | 2013-01-16 15:45:18 (UTC+8) |
| 摘要: | Two Cd(HBimc)-based isomers, [Cd(HBimc(N))(HBimc(T))(H2O)]center dot 3.5H(2)O center dot EtOH (1a.3.5H(2)O center dot EtOH, H(2)Bimc=1H-benzimidazole-5-carboxylic acid) and [Cd(HBimc(N))(HBimc(T))(H2O)] (1b), and two Cu(HMBimc)-based coordination polymers, [Cu(HMBimc(N))(2)(H2O)]center dot 1/2H(2)O (2 center dot 1/2H(2)O, H(2)MBimc=2-methyl-1H-benzimidazole-5-carboxylic acid) and [Cu(HMBimc(T))(2)]center dot 2THF center dot H2O (3.2THF center dot H2O), were self-assembled from Cd(ClO4)(2)center dot 6H(2)O/H(2)Bimc and Cu(ClO4)(2)center dot 6H(2)O/H(2)MBimc systems, respectively. Compound 1a adopts a ladder-like chain structure, comprised of a hydrogen-bond-stabilized Cd-2(HBimc(N))(2)-metallocyclic stair and a 1D straight -(Cd-HBimc(T))(n)- edge, whereas compound 1b exhibits a 2D (4,4)-rhombus layered structure, intercrossed by 1D -(Cd-HBimc(N))(n)- chains and -(Cd-HBimc(T))(n)- chains. Compound 2 shows a 1D double-stranded wave-like chain from two single-stranded wave-like -(Cu-HMBimc(N))(n)- chains and compound 3 adopts a 2D (4,4)-topological layer structure, intercrossed by subunits of 1D -(Cu-HMBimc(T))(n)- chains. Interestingly, a pair of tautomeric HBimc building blocks-normal (N or HBimc(N)) and tautomer (T or HBimc(T))-is simultaneously included in the structures of 1a and 1b, whilst the N- and T-configured HMBimc building blocks are present as separate entities in Cu species, 2 and 3, respectively. The existence of only a tautomer (T) mode of the benzimidazolecarboxylate-based ligand in a Cu(II) network is observed for the first time. (C) 2011 Elsevier Inc. All rights reserved |
| 關聯: | JOURNAL OF SOLID STATE CHEMISTRY Volume: 184 Issue: 7 Pages: 1740-1748 |
| 显示于类别: | [化學系所] 博碩士論文
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