Three-dimensional bpe-pillared layer architectures of metal 2-sulfoterephthalate complexes with a unique 2,3,4-connected topological network: Isomorphism, polymorphism and characterization

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• 作者：Yi-Xia Ren^a ; ^b ; Shan-Shan Xiao^a ; Li-Cun Li^c ; Xiang-Jun Zheng^a ; ^{xjzheng@bnu.edu.cn}
• 关键词：Hydro-/solvo-thermal synthesis ; Crystal structure ; Isomerism
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 出版时间：February, 2012
• 年：2012
• 卷：16
• 期：Complete
• 页码：8-11
• 全文大小：795 K

文摘

Three new coordination polymers, [M_1.5(stp)(bpe)(H₂O)] (M = Mn(1), Cd(2), Zn(3)) have been prepared by hydro-/solvo-thermal reactions of 2-sulfoterephthalate (stp) and 1,2-bis(4-pyridyl)ethane (bpe) ligands with d-block Mn(II), Cd(II) and Zn(II) salts. Complexes 1 and 2 are isomorphic except for the difference of the metal ions, while complexes 1-3 are polymorphic because of the different coordination modes that stp ligand adopts. The left- and right-handed helixes construct 2D layer from metal ions and stp ligands for 1-3, and the anti-bpe ligands as the pillars complete 3D structure. All the three complexes exhibit a new (2,3,4)-connected network with the Schl?fli symbol {8;12²}₄{8²; 12; 14²; 16}{8}₂ based on the different structural motifs. The magnetic properties of 1 reveal that there exists weak antiferromagnetic coupling between the Mn(II) ions. And the solid-state photoluminescence of 2 and 3 can be attributed to the intraligand ¦Ð-¦Ð* transition.