Abstract
Herein, we report research regarding the Ln–Cu(II)–Hpic–H2BDC system, where Ln, Hpic, and H2BDC are lanthanide ions, picolinic acid, and 1,2-benzenedicarboxylic acid, respectively. Under different reaction temperatures (160°C and 170°C), the self-assembly of Gd2O3, CuCl2, Hpic, and H2BDC in water at pH = 2 adjusted by HClO4 generates two Ln-containing coordination compounds, GdCu(pic)(PhCOO)4 (1) and Gd(pic)(BDC)(µ-H2O)2(H2O) (2) (PhCOOH = benzenecarboxylic acid). Under the same reaction conditions, if Gd2O3 is replaced by Pr3O4, then polymer Pr4(BDC)6(µ-H2O)2 (3) is obtained. The structural features are 1-D tape or 2-D irregular (6, 3) net. We also explored their phase purity by X-ray diffraction analysis and evaluated their thermostability by thermogravimetric analysis studies.
Acknowledgment
This work was supported by the Start-up Foundation of East China Institute of Technology.