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

Authors :
Wang, Jun
Fan, Jun
Guo, LiangYu
Yin, Xia
Wang, ZhiHong
Zhang, WeiGuang
Source :
Journal of Solid State Chemistry. Mar2010, Vol. 183 Issue 3, p575-583. 9p.
Publication Year :
2010

Abstract

Abstract: Five new lanthanide supramolecular complexes, namely, [Sm(oqa)2(H2O)4]2 (ClO4)2 ·(bpy)2 (1), [Ln(oqa)3]·2H2O [Ln=Sm(2), Gd(3)] and [Ln(oqa)2(NO3)(H2O)] [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 π–π 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 424·64-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. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00224596
Volume :
183
Issue :
3
Database :
Academic Search Index
Journal :
Journal of Solid State Chemistry
Publication Type :
Academic Journal
Accession number :
48465290
Full Text :
https://doi.org/10.1016/j.jssc.2009.12.027