A series of 2D lanthanide (III) coordination polymers constructed from 2-(pyridin-3-yl)-1H-imidazole-4,5-dicarboxylate
- Institute of Special Materials and School of Chemistry and Environment, South China Normal University, Guangzhou 510006 (China)
Reactions of 2-(pyridine-3-yl)-1H-4,5-imidazoledicarboxylic acid (H{sub 3}PyIDC) with a series of Ln(III) ions affords ten coordination polymers, namely, {l_brace}[Ln(H{sub 2}PyIDC)(HPyIDC)(H{sub 2}O){sub 2}]{center_dot}H{sub 2}O{r_brace}{sub n} [Ln=Nd (1), Sm (2), Eu (3) and Gd (4)], {l_brace}[Ln(HPyIDC)(H{sub 2}O){sub 3}]{center_dot}(H{sub 2}PyIDC){center_dot}H{sub 2}O{r_brace}{sub n} [Ln=Gd (5), Tb (6), Dy (7), Ho (8) and Er (9)], and {l_brace}[Y{sub 2}(HPyIDC){sub 2}(H{sub 2}O){sub 5}]{center_dot}(bpy){center_dot}(NO{sub 3}){sub 2}{center_dot}3H{sub 2}O{r_brace}{sub n} (10) (bpy=4,4 Prime -bipyridine). They exhibit three types of networks: complexes 1-4 are isomorphous coordination networks containing neutral 2D metal-organic layers, while complexes 5-9 are isomorphous, which consist of cationic metal-organic layers and anionic organic layers, and complex 10 is a 2D network built up from 4-connected HPyIDC{sup 2-} anion and 4-connected Y(III) ions. In addition, thermogravimetric analyses and solid-state luminescent properties of the selected complexes are investigated. They exhibit intense, characteristic emissions in the visible region at room temperature. - Graphical abstract: Structure variation of ten Ln(III) complexes is attributed to the lanthanide contraction effect and various coordination modes of H{sub 3}PyIDC ligands. Moreover, photoluminescent properties and thermal behaviors of selected complexes were investigated. Highlights: Black-Right-Pointing-Pointer A series of 2D Ln(III) coordination polymers based on H{sub 3}PyIDC were firstly obtained. Black-Right-Pointing-Pointer The structural variation is partly attributed to the lanthanide contraction effect. Black-Right-Pointing-Pointer Diverse coordination modes of H{sub 3}PyIDC ligands are observed. Black-Right-Pointing-Pointer The Gd(III) complexes with different structures controlled by different synthesis methods.
- OSTI ID:
- 21612811
- Journal Information:
- Journal of Solid State Chemistry, Vol. 184, Issue 12; Other Information: DOI: 10.1016/j.jssc.2011.09.006; PII: S0022-4596(11)00497-X; Copyright (c) 2011 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
BIPYRIDINES
CONTRACTION
LAYERS
LIGANDS
NITRATES
NITROGEN OXIDES
PHOTOLUMINESCENCE
POLYMERS
PYRIDINE
RARE EARTH COMPLEXES
RARE EARTHS
SOLIDS
SYNTHESIS
THERMAL GRAVIMETRIC ANALYSIS
WATER
AZINES
CHALCOGENIDES
CHEMICAL ANALYSIS
COMPLEXES
ELEMENTS
EMISSION
GRAVIMETRIC ANALYSIS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
LUMINESCENCE
METALS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTON EMISSION
PYRIDINES
QUANTITATIVE CHEMICAL ANALYSIS
THERMAL ANALYSIS