Three new metalâorganic co-ordination frameworks formulated as [M(tp)(4,4â²-bipy)] [M = CoII1, CdII2 or ZnII3; tp = terephthalate; 4,4â²-bipy = 4,4â²-bipyridine] have been hydrothermally prepared and structurally characterized. Each pair of metal atoms in the three compounds are bridged by bis-bidentate or chelating/bridging bis-bidentate tp ligands to form a linear or zigzag co-ordination chain, and adjacent chains are further linked by chelating or monodentate bis-bidentate tp ligands to form two-dimensional rectangular or parallelogram-like [M(tp)] sheets with dimensions of 10.30 Ã 11.37, 10.08 Ã 11.68 and 10.28 Ã 10.98 Ã
for complexes 1, 2 and 3, respectively. Adjacent sheets are pillared by 4,4â²-bipy spacers into a three-dimensional co-ordination network through the covalently linking mode of â¯4,4â²-bipyâMIIâ4,4â²-bipyâMIIâ¯, which feature cuboidal [M16(tp)8(4,4â²-bipy)8] structural units. Twofold interpenetration of the above three-dimensional co-ordination networks results in stable crystal structures of the three compounds.
通过
水热法制备了三种新的
金属有机配位框架[M(tp)(4,4â²-bipy)][M =  CoII1、CdII2 或 ZnII3;tp = Â
对苯二甲酸盐;4,4â²-bipy =  4,4â²-联
吡啶],并对其结构进行了表征。这三种化合物中的每对
金属原子都由双同位或螯合/桥接双同位 tp
配体桥接,形成线形或人字形配位链,相邻的配位链通过螯合或单同位双同位 tp
配体进一步连接,形成二维矩形或平行四边形 [M(tp)] 片,其尺寸为 10.复合物 1、2 和 3 的尺寸分别为 10.30   11.37、10.08   11.68 和 10.28  10.98 Â。相邻的薄片通过â¯4,4â²-bipyâMIIâ4,4â²-bipyâMIIâ¯的共价连接方式被4,4â²-bipy间隔物枕成一个三维配位网络,该网络具有立方体[M16(tp)8(4,4â²-bipy)8]结构单元。上述三维配位网络的双倍互穿导致了这三种化合物稳定的晶体结构。