pH variation induced construction of a series of entangled frameworks based on bi- and tri-metallic cores as nodes

Reactions of 1,4-bis(pyridin-4-ylmethoxy)benzene (L) and zinc acetate salts with different multi-caboxylate acids: 1,4-benzenedicarboxylic (p-H2BDC), isophthalic acid (m-H2BDC) and benzene-1,3,5-tricarboxylic acid (H3BTC) yield four entangled structures and one 3D supramolecular framework depending...

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Bibliographic Details
Published in:CrystEngComm 2012-01, Vol.14 (1), p.124-130
Main Authors: Li, Lian-Jie, Qin, Chao, Wang, Xin-Long, Wang, Shuang, Zhao, Liang, Yang, Guang-Sheng, Wang, Hai-Ning, Yuan, Gang, Shao, Kui-Zhan, Su, Zhong-Min
Format: Article
Language:English
Subjects:
Arrays
Chairs
Diffraction
Photoluminescence
Three dimensional
Topology
Zinc
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Summary:Reactions of 1,4-bis(pyridin-4-ylmethoxy)benzene (L) and zinc acetate salts with different multi-caboxylate acids: 1,4-benzenedicarboxylic (p-H2BDC), isophthalic acid (m-H2BDC) and benzene-1,3,5-tricarboxylic acid (H3BTC) yield four entangled structures and one 3D supramolecular framework depending on pH variation. The structures of compounds 1-5 were elucidated by single crystal X-ray diffraction. Topology analysis revealed that the entangled structures of compounds 1-4 covered a range of poly-threading, self-penetrating and interpenetrating coordination. Interestingly, the poly-threaded arrays with cyclohexane-like windows in chair conformation in compound 2 was firstly observed. What's more, compound 4 exhibited a rare eight-connected self-penetrating network based on trinuclear zinc clusters as nodes with 42464 topology. Photoluminescent properties and thermogravimetric analyses for 1-5, were also investigated in detail.
ISSN:1466-8033
1466-8033
DOI:10.1039/C1CE05810J