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Stepwise Assembly of a Multicomponent Heterometallic Metal–Organic Framework via Th6-Based Metalloligands
Inorganic Chemistry ( IF 4.6 ) Pub Date : 2021-09-21 , DOI: 10.1021/acs.inorgchem.1c02082
Xianghe Kong 1, 2 , Kongqiu Hu 1 , Zhiwei Huang 3 , Qunyan Wu 1 , Jipan Yu 1 , Lei Mei 1 , Zhifang Chai 3 , Changming Nie 2 , Weiqun Shi 1
Affiliation  

Herein we present a new metalloligand, Th6L12 [IHEP-10; L = 4-pyrazolecarboxylic acid (H2PyC)], which can be used to generate a novel multicomponent heterometallic metal–organic framework (MOF), [[Cu33-OH)(NO3)(H2O)2]2Th63-O)43-OH)4(PyC)6(HPyC)6(H2O)6](NO3)2 (IHEP-11), through further assembly with second [Cu33-OH)(PyC)3] clusters. In IHEP-11, six Cu3 clusters are connected by six NO3 anions to form an unprecedented annular Cu18 cluster, which can be viewed as a 12-connected node to link with 12 Th6 clusters, resulting a 4,12-connected shp net. Benefiting from the cationic framework and 3D porous structure, IHEP-11 can efficiently remove ReO4 (an analogue of radioactive 99TcO4) from aqueous solution in a wide pH range. This work highlights the feasibility of constructing multicomponent MOFs through a step-by-step synthesis strategy based on metalloligands.

中文翻译:

通过基于 Th6 的金属配体逐步组装多组分异金属金属-有机框架

在此,我们提出了一种新的金属配体 Th 6 L 12 [IHEP-10; L = 4-吡唑羧酸 (H 2 PyC)],可用于生成新型多组分异金属金属有机骨架 (MOF),[[Cu 33 -OH)(NO 3 )(H 2 O) 2 ] 2 Th 63 -O) 43 -OH) 4 (PyC) 6 (HPyC) 6 (H 2 O) 6 ](NO 3 ) 2 (IHEP-11),通过与第二个进一步组装[铜33 -OH)(PyC) 3 ] 簇。在 IHEP-11 中,六个 Cu 3簇由六个 NO 3 -阴离子连接形成一个前所未有的环状 Cu 18簇,它可以看作是一个 12 连接的节点与 12 个 Th 6簇连接,产生了一个 4,12-已连接的 shp 网。受益于阳离子骨架和 3D 多孔结构,IHEP-11 可以有效去除 ReO 4 (放射性99 TcO 4的类似物) 来自广泛 pH 范围内的水溶液。这项工作强调了通过基于金属配体的分步合成策略构建多组分 MOF 的可行性。
更新日期:2021-10-04
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