Syntheses, topological analyses and magnetic properties of two 3D supramolecular nickel-organic frameworks constructed from 1,3,5-benzenetricarboxylate and flexible imidazole-based ligands
| Autor: | Cui-Cui Jia, Zhi-Hua Li, Shao-Wu Du, Jian-Di Lin |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Supramolecular chemistry Stacking chemistry.chemical_element Crystal structure Topology Inorganic Chemistry Metal chemistry.chemical_compound Nickel chemistry visual_art Materials Chemistry visual_art.visual_art_medium Imidazole Metal-organic framework Physical and Theoretical Chemistry Topology (chemistry) |
| Zdroj: | Inorganic Chemistry Communications. 12:558-562 |
| ISSN: | 1387-7003 |
| DOI: | 10.1016/j.inoche.2009.04.020 |
| Popis: | Two supramolecular nickel-organic frameworks, [Ni(HBTC)(bix)]n (1) and [Ni3(BTC)2(mbix)3(H2O)4]n · 6nH2O (2) (bix = 1,4-bis(imidazole-l-yl-methyl)benzene, mbix = 1,3-bis(imidazole-l-yl-methyl)benzene, and H3BTC = 1,3,5-benzenetricarboxylate), have been hydrothermally prepared by the assembly of H3BTC, Ni2+ with bix or mbix. Compound 1 shows a 2D layer structure, whose 3D supramolecular structure exhibits a fsc topology when hydrogen-bonging interactions between the adjacent layers are taken into account. Compound 2 manifests an unprecedented 2D (3, 4)-connected topological net. The 3D supramolecular framework of 2 is formed through π⋯π stacking interactions between the adjacent layers. The magnetic studies show that 1 features overall ferromagnetic property whilst 2 presents strong zero-field splitting (ZFS) when treated as a mononuclear model. Furthermore, the IR and TGA properties of 1 and 2 were also studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect