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首页> 外文期刊>Crystal growth & design >Syntheses and characterizations of two 3D cobalt-organic frameworks from 2D honeycomb building blocks
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Syntheses and characterizations of two 3D cobalt-organic frameworks from 2D honeycomb building blocks

机译：来自2D蜂窝构造块的两个3D钴有机框架的合成与表征

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摘要

The hydrothermal reaction of Co(NO3)(2)(.)6H(2)O, imidazole 4,5-dicarboxylic acid (H3IDC), and 4,4'-bipydine (bipy) under different conditions affords two interesting metal-organic compounds, {[Co-3(IDC)(2)(4,4'-bipy)(H2O)(4)](.)2H(2)O}(n) (1) and {[Co-3(IDC)(2)(4,4'-biPY)(3)](.)6H(2)O(.)DMF}(n) (2), both of which have been structurally characterized by single-crystal X-ray diffraction, elemental analysis, infrared spectroscopy, and thermogravimetric analysis. Temperature-dependent magnetic susceptibility for 1 and 2 were also studied. The "all-chair" two-dimensional honeycomb networks, structurally analogous to CFx, were linked by the bridging 4,4'-bipy ligand in compound 1 to give rise to a 2-fold interpenetrated 3D architecture. Compound 2 features a three-dimensional open framework with hexagonal channels, generated from two-dimensional graphene-like layers pillared by 4,4'-bipy. The simplest cyclic motif of the 2D networks in 1 and 2 is a 24-membered hexagonal ring consisting of six Co(II) cations and six IDC3- trianions.
机译：Co（NO3）（2）（。）6H（2）O，咪唑4,5-二羧酸（H3IDC）和4,4'-联吡啶（bipy）在不同条件下的水热反应提供了两种有趣的金属有机化合物{{Co-3（IDC）（2）（4,4'-bipy）（H2O）（4）]（。）2H（2）O}（n）（1）和{[Co-3 IDC）（2）（4,4'-biPY）（3）]（。）6H（2）O（。）DMF}（n）（2），两者在结构上都通过单晶X-射线衍射，元素分析，红外光谱和热重分析。还研究了1和2随温度变化的磁化率。结构上类似于CFx的“全椅”二维蜂窝网络通过化合物1中的4,4'-联吡啶配体桥连在一起，形成了2倍互穿的3D结构。化合物2的特征是具有六边形通道的三维开放框架，该框架是由以4,4'-bipy为基的二维石墨烯样层生成的。 1和2中2D网络的最简单的环状基序是由六个Co（II）阳离子和六个IDC3-三阴离子组成的24元六角环。

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