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首页> 外文期刊>Crystal growth & design >New Metal?Organic Frameworks Constructed from the 4?Imidazole- Carboxylate Ligand: Structural Diversities, Luminescence, and Gas Adsorption Properties
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New Metal?Organic Frameworks Constructed from the 4?Imidazole- Carboxylate Ligand: Structural Diversities, Luminescence, and Gas Adsorption Properties

机译:由4?咪唑-羧酸盐配体构建的新型金属有机骨架:结构多样性,发光度和气体吸附特性

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摘要

Reactions of metal ions with a rigid linear ligand 4-H_2IBA incorporating 4-imidazolyl and carboxylate functional groups [4-H_2IBA = 4- (1H-imidazol-4-yl)benzoic acid] under variable reaction conditions gave 11 new coordination polymers, [Cu(4-HIBA)_2(H_2O)_4] (1), [CuIICuI(4-HIBA)- (4-IBA)(H_2O)_2]·2.3H_2O (2), [Cu(4-HIBA)(Cl)] (3), [Cu3(4-HIBA)6]· 7.8H_2O (4), [Cd(4-HIBA)2(H_2O)]·2H_2O (5), [Cd(4-HIBA)2] (6), [Cd(4- HIBA)2]·2DMF (7), [Cd2(4-HIBA)4]·H_2O (8), [Zn(4-HIBA)2]·H_2O (9), [Zn(4-HIBA)2]·C_2H_5OH·DMF (10), and [Co(4-HIBA)_2]·2DMF (11). The copper complexes 1?4 are discrete molecules to three-dimensional (3D) infinite networks. Complexes 1 and 2 formed in different reaction temperatures exhibit a mononuclear motif and one-dimensional (1D) chain, respectively. Compounds 3 and 4 were obtained through controlling reaction solvent systems, and 3 features a two-dimensional (2D) (4,4) network by taking the binuclear [Cu_2(Cl)_2] as 4-connecting nodes, whereas 4 is a 3-fold interpenetrating mog net with Point (Schla?fli) symbol of (4·64·8)2(42·62·82). The 4-HIBA? ligands act as rod-type two-connectors to connect metal Cd(II) centers into 4- connected 3D frameworks with different topologies: binodal 4-connected network with a Point (Schla?fli) symbol of (8~6) (5) and uninodal (65·8) net (6), uninodal 4-connected [2 + 2] interpenetrating (6~6) dia net (7), and 5-fold interpenetrating dia net (8), respectively. Complex 9 has a 1D double chain structure, while 10 and 11 are isostructural as 7. Fluorescence and gas adsorption properties of the compounds have also been explored.
机译:金属离子与包含4-咪唑基和羧酸酯官能团[4-H_2IBA = 4-(1H-咪唑-4-基)苯甲酸]的刚性线性配体4-H_2IBA在可变反应条件下的反应产生了11种新的配位聚合物,[ Cu(4-HIBA)_2(H_2O)_4](1),[CuIICuI(4-HIBA)-(4-IBA)(H_2O)_2]·2.3H_2O(2),[Cu(4-HIBA)(Cl )](3),[Cu3(4-HIBA)6]·7.8H_2O(4),[Cd(4-HIBA)2(H_2O)]·2H_2O(5),[Cd(4-HIBA)2]( 6),[Cd(4-HIBA)2]·2DMF(7),[Cd2(4-HIBA)4]·H_2O(8),[Zn(4-HIBA)2]·H_2O(9),[Zn (4-HIBA)2]·C_2H_5OH·DMF(10)和[Co(4-HIBA)_2]·2DMF(11)。铜络合物1至4是3D无限网络的离散分子。在不同反应温度下形成的配合物1和2分别显示单核基序和一维(1D)链。通过控制反应溶剂系统获得化合物3和4,化合物3以双核[Cu_2(Cl)_2]为4个连接节点,具有二维(2D)(4,4)网络,而4为3点(Schla?fli)符号为(4·64·8)2(42·62·82)的三重互穿式拖网。 4-HIBA?配体充当杆型两个连接器,将金属Cd(II)中心连接到具有不同拓扑结构的4个连接的3D框架中:双点式4个连接的网络,其点(Schla?fli)符号为(8〜6)(5)和单齿(65·8)网(6),单齿4连接[2 + 2]互穿(6〜6)直径的网(7)和5倍互穿直径(8)。配合物9具有一维双链结构,而10和11具有7等构结构。还研究了化合物的荧光和气体吸附特性。

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