Three Co(II) Metal–Organic Frameworks with Diverse Architectures for Selective Gas Sorption and Magnetic Studies
作者:Arun Pal、Santanu Chand、Joan Cano Boquera、Francesc Lloret、Jian-Bin Lin、Shyam Chand Pal、Madhab C. Das
DOI:10.1021/acs.inorgchem.9b00471
日期:2019.5.6
metal–organic frameworks, namely, [Co2(L)2(OBA)2(H2O)4]·xG}n (1), [Co(L)0.5(OBA)]·xG}n (2), and [Co2(L)2(OBA)2(H2O)]·DMA·xG}n (3) [where L = 2,5-bis(3-pyridyl)-3,4-diaza-2,4-hexadiene, H2OBA = 4,4′-oxybisbenzoic acid, DMF = dimethylformamide, DMA = dimethylacetamide, and G denotes disordered guest molecules], have been synthesized under diverse reaction conditions through self-assembly of a bent dicarboxylate
三个Co(II)金属有机骨架,即[Co 2(L)2(OBA)2(H 2 O)4 ]· x G} n(1),[Co(L)0.5(OBA) ]· x G} n(2)和[Co 2(L)2(OBA)2(H 2 O)]·DMA· x G} n(3)[其中L = 2,5-bis(3 -吡啶基)-3,4-二氮杂-2,4-己二烯,H 2OBA = 4,4'-氧基双苯甲酸,DMF =二甲基甲酰胺,DMA =二甲基乙酰胺,G表示无序的客体分子],是在不同的反应条件下,通过自组装弯曲的二羧酸盐和带有Co(II ) 离子。而1是在DMF室温结晶以形成2D层结构,2是通过用三维网络结构溶剂热条件下类似的组件的组件形成。另一方面,将溶剂更改为DMA,可以在3D架构下于室温下结晶3。在这三个样品中,发现活化样品2本质上是永久微孔的,BET表面积为385 m 2/ g,并且对C 2 H 2和CO 2的吸收能力中等,而在环境条件下吸收的CH