Synthesis, crystal structures and photoluminescent properties of lanthanide supramolecular complexes with 4-oxo-1(4H)-quinolineacetate

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.12.027· OSTI ID:21372522

Jun, Wang ^[1]; Liangyu, Guo; Xia, Yin; Zhihong, Wang ^[1]

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1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006 (China)

Five new lanthanide supramolecular complexes, namely, [Sm(oqa){sub 2}(H{sub 2}O){sub 4}]{sub 2} (ClO{sub 4}){sub 2}.(bpy){sub 2} (1), [Ln(oqa){sub 3}].2H{sub 2}O [Ln=Sm(2), Gd(3)] and [Ln(oqa){sub 2}(NO{sub 3})(H{sub 2}O); Ln=Pr(4), Eu(5)] (oqa=4-oxo-1(4H)-quinolineacetate, bpy=4,4'-bipyridine), have been synthesized under hydrothermal conditions. These complexes exhibit three typical structure features. Complex 1 possesses a dimeric structure, which is further connected together through hydrogen bonds and pi-pi attractions, forming a 3D supramolecular framework. Compounds 2-3 are isomorphous and contain 1D ring-like chains, which are further interconnected by the oqa ligands into 2D sheet-like structures. 4 and 5 exhibit eight-connected 3D network of 4{sup 24}.6{sup 4}-bcu topology. The various coordination modes of carboxylate ligands and the selection of the counterions have clearly affected the topological structures. Furthermore, the solid-state luminescent properties of complexes 1, 2 and 5 were investigated at room temperature and they show intense, characteristic emissions in the visible region. - Graphical abstract Text7: The hydrothermal reactions of the oqa molecules with varied lanthanide ions resulted in the formation of five new complexes, which exhibit three typical structure features.

• OSTI ID: 21372522
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 3 Vol. 183; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AZINES
BIPYRIDINES
COMPLEXES
CRYSTAL STRUCTURE
EMISSION
EUROPIUM COMPLEXES
GADOLINIUM COMPLEXES
HETEROCYCLIC COMPOUNDS
HYDROTHERMAL SYNTHESIS
LIGANDS
LUMINESCENCE
MATHEMATICS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOLUMINESCENCE
PHOTON EMISSION
PRASEODYMIUM COMPLEXES
PYRIDINES
RARE EARTH COMPLEXES
SAMARIUM COMPLEXES
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TOPOLOGY