writer：Xiaoxia Lv, Liangjun Li, Xiaoming Sun, Hongyv Zhang*, Jinjun Cai, Chao Wang, Sifu Tang, Xuebo Zhao*
keywords：microporous coordination ploymer
source：期刊
specific source：Chemistry-An Asian Journal, 2014, 9，901-907
Issue time：2014年
The microporous coordination polymer [Co(H2L)(bipy)0.5]?2?H2O (1, bipy=4,4′-bipyridine) was synthesized on the basis of the V-shaped flexible diphosphonate ligand (2,4,6-trimethyl-1,3-phenylene)bis(methylene)diphosphonic acid (H4L) and the auxiliary bipy ligand under hydrothermal conditions. The structure of this compound was characterized by single-crystal X-ray diffraction. By joining the diphosphonate ligands and bipy through tetrahedral [CoO3N] clusters, a 2D square grid layered network was formed. Further stacking of these layers on the basis of π–π interactions resulted in a pseudo-3D microporous network with 1D channels running through the a axis. Gas sorption studies for CO2, H2, CH4, N2, and O2 on this coordination polymer were performed, and the results revealed interesting dynamic and hysteresis sorption behavior toward H2 at low temperature.