Eight-rings and twenty-eight-rings were formed through the connection of fumarate with the ions in the structure of coordination polymer (8). The characterization of (8) by N2 adsorption shows that the BET surface area is 24.2m /g.

• 配位聚合物(8)结构中形成8元和28元环；构成了微孔的结构；BET比表面积为24.；2m~2/g；并且热稳定性较好。