Lanthanide coordination polymers based on multi-donor ligand containing pyridine and phthalate moieties: Structures, luminescence and magnetic properties

• Published in: Journal of solid state chemistry 2013-10, Vol.206, p.277-285
• Main Authors: Feng, Xun, Liu, Lang, Wang, Li-Ya, Song, Hong-Liang, Qiang Shi, Zhi, Wu, Xu-Hong, Ng, Seik-Weng
• Format: Article
• Language: English
• Subjects: Chlorides; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Coordination polymers; Emission; Exact sciences and technology; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; Lanthanide coordination polymer; Lanthanides; LIGANDS; Luminescence; MAGNETIC PROPERTIES; MONOCRYSTALS; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; PHOTOLUMINESCENCE; Physics; POLYMERS; PYRIDINE; RARE EARTH COMPLEXES; RARE EARTHS; Single crystal structure; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Three dimensional
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2013.08.029

A new family of five lanthanide-organic coordination polymers incorporating multi-functional N-hetrocyclic dicarboxylate ligand, namely, [Ln2(Hdpp)2(dpp)2]nLn=Pr(1), Eu(2), Gd(3), Dy(4), Er(5) (H2dpp=1-(3, 4-dicarboxyphenyl) pyridin-4-ol) have been fabricated successfully through solvothermal reaction of 1-(3,4-dicarboxyphenyl)-4-hydroxypyridin-1-ium chloride with trivalent lanthanide salts, and have been characterized systematically. The complexes 1–5 are isomorphous and isostructural. They all feature three dimensional (3D) frameworks based on the interconnection of 1D double chains composed of the binuclear moiety [Ln2(Hdpp)2]4+ basic carboxylate as secondary building unit (SBU). The results of magnetic analysis shows the same bridging fashion of carboxylic group in this case results in the different magnetic properties occurring within lanthanide polymers. Moreover, the Eu(III) and Dy(III) complexes display characteristic luminescence emission in the visible regions. A new family of lanthanide-organic frameworks incorporating multi-donor twisted ligand has been fabricated successfully, and has been characterized systematically. The complexes 1–5 are isostructural, and all feather three dimensional (3D) frameworks based on the interconnection of 1D double stride chains composed of the binuclear moiety [Ln2(Hdpp)2]2+ basic carboxylate as secondary building unit (SBU). [Display omitted] •New family of lanthanide–organic coordination polymers incorporating multifunctional N-hetrocyclic dicarboxylate ligand has been fabricated.•They have been characterized systematically.•They all feather three dimensional frameworks based on the binuclear moiety of [Ln2(Hdpp)2]2+.•The Eu(III) and Dy(III) analogues exhibit intense photoluminescence.