Synthesis, Crystal Structure and Characterizations of a Novel Open-framework Lanthanide Imidazoledicarboxylate

摘要

The construction, crystal structure and properties and potential application of metal imidazoledicarboxylate frameworks have currently attracted considerable attention. A novel open-framework Lanthanide imidazoledicarboxylate, [Tb(HpyimdC)(C_2O_4)_(0.5)(H_2O)]-(H_2O)_3 (compound 1), was constructed from 2-(pyridine-3-yl)-lH-4,5- imidazoledicarboxylate (H_3Pylmdc) and Oxalate coordinated with lanthanide under solvothermal conditions. Single-crystal X-ray diffraction analysis reveals that compound 1 crystallized in the monoclinic space group C2/c (No. 15). Oxalate chelated with Tb to form a one-dimensional zigzag chain, H_3pyimdc with selective nitrogen-oxygen chelating site, constructed these chains into metal organic frameworks featuring extra-large channels deposited by guest molecules. Further characterizations for compound 1 have been performed, including X-ray powder diffraction, IR Spectrum and elemental analysis. Synthesis, crystal structure and structural characterizations for 1 were reported in this paper.