National Changhua University of Education Institutional Repository : Item 987654321/18976
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題名: Zinc Coordination Polymers with 2,6-Bis(imidazole-1-yl)pyridine and Benzenecarboxylate: Pseudo-Supramolecular Isomers with and without Interpenetration and Unprecedented Trinodal Topology
作者: Lee, Jhen-Yi;Chen, Chih-Yuan;Lee, Hon Man;Elisa Passaglia;Francesco Vizza;Werner Oberhauser
貢獻者: 化學系
日期: 2011-03
上傳時間: 2014-08-14T04:30:29Z
出版者: American Chemical Society
摘要: The ligand combination of semirigid 2,6-bis(imidazole-1-yl)pyridine (2,6-bip) and rigid benzenecarboxylate allow the isolation of three new zinc coordination polymers. Hydrothermal synthesis between Zn(NO3)2 3 6H2O, 2,6- bip, and terephthalic acid under basic condition affords [Zn(1,4-bdc)(2,6-bip) 3 2 H2O]n (1) (1,4-bdc =1,4-benzenedicarboxylate), which shows an undulating 2D (4,4)-network with 2-fold interpenetration. Contrastingly, solvothermal synthesis with identical starting materials in DMF, yields [Zn(1,4-bdc)(2,6-bip) 3DMF]n (2), which exhibits noninterpenetrating 2D (4,4)-network. Thus 1 and 2 are pseudosupramolecular isomeric pair, illustrating the strong effect of guest solvents in controlling the entanglement. A similar hydrothermal reaction to 1 but using 1,3,5- benzenetricarboxylic acid instead yields [Zn2(μ OH)(1,3,5-btc)(2,6-bip) 3H2O]n (3) (btc = benzenetricarboxylate), which exhibits a (3,4,6)-connected 3D framework with an unprecedented {5.6.7}2{52.6.7.82}2{54.62.73.84.92} topology. Compound 1 and 2 show reversible solvent incorporation properties.
關聯: Cryst. Growth Des., 11(4): 1230-1237
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