Six isostructural lanthanide-containing MOFs built on a semi-rigid tripodal organic ligand
| Autor: | Kai Zhao, Zhi-Guo Wang, He-Gen Zheng, Lian Zhou, Sheng-Nian Tie, Yu-Jia Hu, Zi-Jun Gao, Hao-Yu Dong |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Lanthanide
010405 organic chemistry Stereochemistry Ligand Supramolecular chemistry chemistry.chemical_element Crystal structure 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry Tripodal ligand Materials Chemistry Lanthanum Physical and Theoretical Chemistry Methylene Isostructural |
| Zdroj: | Inorganic Chemistry Communications. 78:1-4 |
| ISSN: | 1387-7003 |
| DOI: | 10.1016/j.inoche.2017.01.036 |
| Popis: | By using a semi-rigid tripodal ligand 1,1′,1′′-(2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene)tripyridinium-4-olate) (L), six isomorphous lanthanum metal-organic frameworks (MOFs), namely, [Pr(L)2(Cl)2]·(Cl)(DMF)0.5·(H2O)·(1), [Nd(L)2(Cl)2]·(Cl)(2), [Tb(L)2(Cl)2]·(Cl)·(DMF)·(H2O)(3), [Eu(L)2(Cl)2]·(Cl)(DMF)·(H2O)(4), [La(L)2(Cl)2]·(Cl)(5), [Sm(L)2(Cl)2]·(Cl) (DMF)·(H2O) (6), were obtained and characterized by single crystal X-ray diffraction, IR and elemental analysis. Six compounds are isostructural with Ln3 + (Ln = Pr, Nd, Tb, Eu, La, Sm) and in which the Ln3 + is considered as a 6-connecting node and the L ligand is a 3-connecting node to afford a (3,6)-connected 2D layer with kgd topology, which further stacks into 3D supramolecular networks through C-H…O weak interactions. Luminescent properties of these lanthanide MOFs have also been assessed at ambient temperature, in which the Pr3 +-1 and the La3 +-5 are slightly blue-shifted with respect to the ligand. Series of sharp peaks characteristic of the Eu3 +-4, the Tb3 +-3 and Sm3 + − 6 metal-centered luminescence appear. The Nd3 +-2 has no emission. |
| Databáze: | OpenAIRE |
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