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Windmill Co4{Co4(μ4‐O)} with 16 Divergent Branches Forming a Family of Metal–Organic Frameworks: Organic Metrics Control Topology, Gas Sorption, and Magnetism
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2016-07-07 , DOI: 10.1002/chem.201601826
Qing Chen 1 , Wei Xue 1 , Jian-Bin Lin 1 , Yong-Sheng Wei 1 , Zheng Yin 2 , Ming-Hua Zeng 2 , Mohamedally Kurmoo 3 , Xiao-Ming Chen 1, 4
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2016-07-07 , DOI: 10.1002/chem.201601826
Qing Chen 1 , Wei Xue 1 , Jian-Bin Lin 1 , Yong-Sheng Wei 1 , Zheng Yin 2 , Ming-Hua Zeng 2 , Mohamedally Kurmoo 3 , Xiao-Ming Chen 1, 4
Affiliation
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A series of highly connected metal–organic frameworks (MOFs), [Co8(O)(OH)4(H2O)4(ina)8](NO3)2⋅2 C2H5OH⋅4 H2O (1), [Co8(O)(OH)4(H2O)4(pba)8](NO3)2⋅8 C2H5OH⋅28 H2O (2), and [Co8(O)(OH)4(H2O)4(pbba)8](NO3)2⋅guest (3), in which ina=isonicotinate, pba=4‐pyridylbenzoate, and pbba=4‐(pyridine‐4‐yl)phenylbenzoate, is reported. These MOFs contain a new secondary building unit (SBU), with a square Co4(μ4‐O) central unit having the rare μ4‐O2− motif, which is decorated by the other four peripheral cobalt atoms through μ3‐OH in a windmill‐like shape. This SBU holds 16 divergent connecting organic ligands, pyridyl‐carboxylates, to form three different frameworks. The high porosity of desolvated 2 is shown by the efficient gas absorption of N2, CO2, CH4, and H2. In addition, 1 and 2 exhibit unusual canted antiferromagnetic behavior with spin‐glass‐like relaxation, with blocking temperatures that are fairly high, 20 K (1) and 10 K (2), for cobalt materials. The relationship between the metal clusters and linkers has been studied, in which the size and rotational degrees of freedom of the ligands are found to control the topology, gas sorption, and magnetic properties.
中文翻译:
具有16个发散分支的风车Co4 {Co4(μ4-O)},形成金属有机框架家族:有机度量控制拓扑,气体吸附和磁性
一系列高度连接的金属-有机骨架(MOF)的,[CO 8(O)(OH)4(H 2 O)4(INA)8 ](NO 3)2 ⋅ 2 C 2 H ^ 5 OH ⋅ 4小时2 O(1),[CO 8(O)(OH)4(H 2 O)4(PBA)8 ](NO 3)2 ⋅ 8℃ 2 ħ 5 OH ⋅ 28 H 2 O(2),和[CO 8(O)(OH)4(H 2 O)4(PBBA)8 ](NO 3)2 ⋅客人(3),其中INA =异烟酸盐,PBA = 4- pyridylbenzoate,和PBBA = 4-(吡啶-4-报道了[yl]苯基苯甲酸酯。这些的MOF包含新的辅助建筑物单元(SBU),具有正方形钴4(μ 4具有罕见μ-O)中央单元4 -O 2-基序,这是由其他四个周边钴原子通过μ装饰3 -像风车一样的OH。该SBU包含16个发散的连接有机配体吡啶基羧酸盐,形成三个不同的框架。去溶剂化的高孔隙率2是通过N的有效的气体吸收所示2,CO 2,CH 4和H 2。此外,1和2表现出不寻常的倾斜反铁磁行为,并具有类似自旋玻璃的弛豫,对于钴材料,其阻断温度相当高,分别为20 K(1)和10 K(2)。已经研究了金属簇和连接体之间的关系,其中发现了配体的大小和旋转自由度可控制拓扑,气体吸附和磁性能。
更新日期:2016-07-07
中文翻译:

具有16个发散分支的风车Co4 {Co4(μ4-O)},形成金属有机框架家族:有机度量控制拓扑,气体吸附和磁性
一系列高度连接的金属-有机骨架(MOF)的,[CO 8(O)(OH)4(H 2 O)4(INA)8 ](NO 3)2 ⋅ 2 C 2 H ^ 5 OH ⋅ 4小时2 O(1),[CO 8(O)(OH)4(H 2 O)4(PBA)8 ](NO 3)2 ⋅ 8℃ 2 ħ 5 OH ⋅ 28 H 2 O(2),和[CO 8(O)(OH)4(H 2 O)4(PBBA)8 ](NO 3)2 ⋅客人(3),其中INA =异烟酸盐,PBA = 4- pyridylbenzoate,和PBBA = 4-(吡啶-4-报道了[yl]苯基苯甲酸酯。这些的MOF包含新的辅助建筑物单元(SBU),具有正方形钴4(μ 4具有罕见μ-O)中央单元4 -O 2-基序,这是由其他四个周边钴原子通过μ装饰3 -像风车一样的OH。该SBU包含16个发散的连接有机配体吡啶基羧酸盐,形成三个不同的框架。去溶剂化的高孔隙率2是通过N的有效的气体吸收所示2,CO 2,CH 4和H 2。此外,1和2表现出不寻常的倾斜反铁磁行为,并具有类似自旋玻璃的弛豫,对于钴材料,其阻断温度相当高,分别为20 K(1)和10 K(2)。已经研究了金属簇和连接体之间的关系,其中发现了配体的大小和旋转自由度可控制拓扑,气体吸附和磁性能。