Novel heteroleptic lanthanide organic frameworks containing pyridine-2,5-dicarboxylic acid and in situ generated piperazine-2,5-dicarboxylic acid from piperazine: Hydrothermal synthesis and luminescent properties
- Department of Chemistry, Arts and Science Faculty, Çukurova University, 01330, Adana (Turkey)
- Department of Chemistry, Anadolu University,26470, Eskişehir (Turkey)
Two novel 3D lanthanide metal-organic frameworks [Ln(pydc)(pip){sub 1/2}(H{sub 2}O] (Ln=Ce (1) and Pr (2), H{sub 2}pydc=2,5-pyridinedicarboxylic acid, H{sub 2}pip=2,5-piperazinedicarboxylic acid have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), powder X-ray diffractions (PXRD), and single-crystal X-ray diffractions. Field emission scanning electron microscopy (FESEM) was used for morphological analysis. Complexes are isostructural and feature interesting 3D frameworks. Both compounds crystallize in the monoclinic system, space group P2{sub 1}/c. Structural analyses of 1 and 2 show that Ln{sup 3+} ions connect with each other through H{sub 2}pydc and H{sub 2}pip. To the best of our knowledge, they are the first heteroleptic lanthanide polymers obtained through in situ 2,5-piperazinedicarboxylic acid syntheses. Moreover, thermal and luminescent properties of the compounds have been investigated. - Graphical abstract: Two novel 3D lanthanide metal-organic frameworks have been synthesized under hydrothermal conditions. Luminescent properties of the compounds in different temperatures have been also investigated. - Highlights: • New cerium and praseodymium coordination polymers based on N-O-bifunctional ligands have been synthesized In situ hydrothermal decarboxylation. • 2,5-pyridinedicarboxylic acid and piperazine were used as ligands. • In situ hydrothermal decarboxylation and formation of ligands were observed.
- OSTI ID:
- 22573991
- Journal Information:
- Journal of Solid State Chemistry, Vol. 233; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CERIUM
DECARBOXYLATION
DICARBOXYLIC ACIDS
FIELD EMISSION
HYDROTHERMAL SYNTHESIS
INFRARED SPECTRA
LIGANDS
LUMINESCENCE
MONOCLINIC LATTICES
MONOCRYSTALS
ORGANOMETALLIC COMPOUNDS
PIPERAZINES
POLYMERS
POWDERS
PRASEODYMIUM
PYRIDINE
SCANNING ELECTRON MICROSCOPY
THERMAL GRAVIMETRIC ANALYSIS
X RADIATION
X-RAY DIFFRACTION