Abstract By employing the hydrothermal in situ acylation of organic acids with N 2 H 4 , three porous acylhydrazidate-based Zn 2+ /Cd 2+ coordination polymers as [M(L1)(H 2 O)]·1.5H 2 O (H 2 L1 = benzimidazole-5,6-dihydrazide; M 2+ = Zn 2+ 1 , Cd 2+ 2 ) and [Zn(HL2)(H 2 O)]·3H 2 O (H 3 L2 = 4,5-(di-(3′,4′-phthalhydrazide))) 3 were obtained. X-ray single-crystal diffraction analysis reveals that the frameworks of 1 – 3 can all be simplified into a (3 metal node ,3 ligand node )-connected net. However, since the ligands are different, they show the distinct structures: a C-tube-like structure for the isostructural 1 and 2 ; a 10 3 topology for 3 . The cif-checking reports indicate that the solvent accessible voids in the structures of 1 – 3 are 1055 A 3 , 1282.4 A 3 , and 978 A 3 , respectively. It is noteworthy that 3 is the first example of triacylhydrazidate-based coordination polymer. The investigation of the I 2 -adsorption property for two Zn 2+ compounds suggests that both can adsorb reversibly the I 2 molecule. The adsorption amount for 3 (100 mg adsorbing 22.0 mg I 2 ) is a bit higher than that for 1 (100 mg accommodating 15.6 mg I 2 ). However, the adsorption speed for 3 is much faster than that for 1 . About 5 s, the I 2 adsorption for 3 is close to saturation, while for 1 , it is about 20 days. This might be related to the number and the distribution for the uncoordinated N/O atoms on the side walls of the channels.

中文翻译：

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基于酰肼的多孔配位聚合物和可逆的 I 2 吸附性能

摘要 通过有机酸与 N 2 H 4 的水热原位酰化反应，制备了三种多孔酰肼基 Zn 2+ /Cd 2+ 配位聚合物 [M(L1)(H 2 O)]·1.5H 2 O (H 2 L1 = 苯并咪唑-5,6-二酰肼；M 2+ = Zn 2+ 1 , Cd 2+ 2 ) 和 [Zn(HL2)(H 2 O)]·3H 2 O (H 3 L2 = 4,5- (di-(3',4'-邻苯二甲酰肼))) 3。X射线单晶衍射分析表明，1-3的骨架都可以简化为（3个金属节点，3个配体节点）连接的网络。然而，由于配体不同，它们显示出不同的结构：同构 1 和 2 的 C 管状结构；3 的 10 3 拓扑。cif 检验报告表明，1-3 结构中的溶剂可及空隙分别为 1055 A 3 、1282.4 A 3 和 978 A 3 。值得注意的是，3是三酰肼基配位聚合物的第一个例子。对两种 Zn 2+ 化合物的 I 2 吸附特性的研究表明，两者都可以可逆地吸附 I 2 分子。3（100 mg吸附22.0 mg I 2 ）的吸附量略高于1（100 mg吸附15.6 mg I 2 ）。然而，3 的吸附速度比 1 快得多。大约5 s，3 的I 2 吸附接近饱和，而1 的I 2 吸附大约为20天。这可能与通道侧壁上未配位的 N/O 原子的数量和分布有关。3（100 mg吸附22.0 mg I 2 ）的吸附量略高于1（100 mg吸附15.6 mg I 2 ）。然而，3 的吸附速度比 1 快得多。大约5 s，3 的I 2 吸附接近饱和，而1 的I 2 吸附大约为20天。这可能与通道侧壁上未配位的 N/O 原子的数量和分布有关。3（100 mg吸附22.0 mg I 2 ）的吸附量略高于1（100 mg吸附15.6 mg I 2 ）。然而，3 的吸附速度比 1 快得多。大约5 s，3 的I 2 吸附接近饱和，而1 的I 2 吸附大约为20天。这可能与通道侧壁上未配位的 N/O 原子的数量和分布有关。