Syntheses, Crystal Structures And Characterization Of Microporous Lanthanide Coordination Polymers

The design and synthesis of microporous lanthanide coordination polymers with novel structures and potential applications, such as separation, heterogeneous catalysis, gas storage and magnetics has mushroomed at present.This paper aims to synthesis some miroporous coordinaiton polymers through the sefl-assembly of lanthanide ions and macromolecule molecule ligands or small ligands. A series of lanthanide coordination polemers were hydrothermally synthesized with2,8,14,20-tetra-iso-butyl-pyrogallol[4] arene, oxalic acid and formic acid as ligands. The complexes or partial complexes have been characterized by X-Ray single-crystal diffraction, IR, and solid fluorescence.This thesis include following parts:1.2,8,14,20-tetra-iso-butyl-pyrogallol [4] arene was successfully prepared and cystal sample of C44H56O12·2C4H8O2·2H2O(1) was obtained by recrystallization. The compound1exhibits a two-dimensional supramolecular structure constructed through intermolecular hydrogen bonding.2. Three-dimensional microporous lanthantion coordination polymer [(CH3)2NH4+]2Er2(C2O4)2(HCOO)4(2), was obtained on investigating the coordination behavior of2,8,14,20-tetra-iso-butyl-pyrogallol [4] arene.3. A series of microporous lanthanide coordination polymers have been obtained in hydrothermal conditions, with oxalic acid and formic acid as organic simple ligands simulaneity. Complexes Ln2(C2O4)3(H2O)6-4H2O·C2H8N2(Ln=Gd, Eu, Dy, Pr)(3-6) and [Tb2(CO3)2(C2O4)·H2O]n(7). Complexes(3)-(6) form two-dimensional network with (6,3) topologic structure. Complex (7) exbibits a three-dimensional framework based on oxalate and carbonate anions. Complexes (4),(5),(7) display outstanding fluorescence.