A 2D Lanthanide-organic Framework Based on Inorganic Lanthanum(III) Sulfate Skeletons: Synthesis, Structure, and Luminescence and Thermal Properties

作者：Feng Xun; Zhang Gai; Zhang Rong-Lan; Sun Qian-Qian; Zhao Jian-She^*

来源：Chinese Journal of Structural Chemistry, 2011, 30(1): 144-150.

• lanthanum-organic framework
• luminescence
• thermal properties

A new lanthanum coordination polymer formulated as {[La-2(pyda)(2)(mu(4)-SO4)center dot 5H(2)O]center dot 2H(2)O}(n) (1, H(2)pyda = 2,6-pyridine-dicarboxylic acid) has been synthesized from the reaction of H(2)pyda with lanthanide nitrate in the presence of sulfate as a counter anion. The compound was characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction. It crystallizes in the orthorhombic system, space group Pna2(1), with a = 18.8558(19), b = 6.5831(7) and c = 18.7543(19) angstrom. The compound is a 2D hybrid, in which the La(III) ions were doubly connected by the carboxylic group of pyda(2-) ligand to form the La(III) dimer followed by being grafted into 1D zig-zag chains which are further connected into a 2D network containing {[La(SO4)](+)}(n) helical chains. The interchain hydrogen bonding and pi-pi stacking interactions extended the 2D networks into a 3D supramolecular edifice.

• 出版日期2011
• 单位西北大学; 洛阳师范学院