Abstract
Two lanthanide coordination polymers, [Tm2·(5-IPA)4·(2,2′-Hbipy)2]·3H2O (1, 5-H2IPA = 5-hydroxyisophthalic acid, 2,2′-bipy = 2,2′-bipyridine) and [Er·(5-HIPA)3·(4,4′-bipy)3·(H2O)2]·3H2O (2, 4,4′-bipy = 4,4′-bipyridine), have formed by hydrothermal synthesis. Complex 1 exhibits a 2-D coordination network containing parallelepiped-shaped voids occupied by guest 2′2-bipy molecules. Complex 2 possesses a 1-D linear chain structure. The 1-D chains are linked by 4,4′-bipy molecules to form a 3-D supramolecular framework. IR spectroscopy, elemental analysis, and thermogravimetric analysis were also investigated.
Acknowledgements
This work was financially supported by the Undergraduates’ Innovating Experimentation Project of Guangdong Province, the Undergraduates’ Innovating Experimentation Project of South China Normal University and Natural Science Foundation of Guangdong Province (grant nos. 10451063101004667 and 10451063101006346).