| 镍螺旋化合物及其杂银配位聚合物的设计合成与结构(英文) | |
| Nickel Helicates and Hybrid Silver Coordination Polymer: Design, Synthesis and Structure Characterization | |
| 摘要: 采用两个易扭转异构的双三齿有机配体，双吡啶二甲基-6,6′-二酰肼-2,2′-连吡啶(H2L1)和双吡啶二乙基-6,6′-二酰肼-2,2′-连吡啶(H2L2)，和金属镍离子组装得到2个金属螺旋体(helicate)，Ni2(HL1)2(PF6)(BF4)(CH3OH)(H2O)2 (1)和Ni2(HL2)(H2L2)(ClO4)3(C2H5OH)(CH3OH)H2O)3 (2),并测定了它们的晶体结构。同时由配体H2L3出发,通过逐级组装的方法,得到一个镍-银杂金属的配位聚合物Ni2Ag2(HL3)2(ClO4)2(CH3CN)3 (3)。单晶结构表明，配位聚合物3中配体H2L3首先与镍离子组装成分子盒化合物(molecular box)，该结构单元进一步通过Ag离子与分子盒外围N原子配位，使分子盒互相串连成一维配位聚合物3，分子盒聚集体沿c方向伸展成一维链结构，链与链之间相互平行，进一步堆积成二维孔道结构。 | |
| 关键词: 螺旋 分子盒 多孔结构 逐级组装 配位聚合物 | |
| 基金项目: | |
| Abstract: Two molecular clips with flexible bis-tridentate coordination sites, di(2-pyridylcarbaldehyde)-6,6′-dicarboxylic acid hydrazone-2,2′-bipyridine (H2L1) and di(2-acetylpyridyl)-6,6′-dicarboxylic acid hydrazone-2,2′-bipyridine (H2L2) have been prepared. Dinuclear double-stranded helicate Ni2(HL1)2(PF6)(BF4)(CH3OH)(H2O)2 (1) and Ni2(HL2)(H2L2)(ClO4)3(C2H5OH)(CH3OH)H2O)3 (2) based on the ligands, H2L1 and H2L2 respectively, have been synthesized, their crystal structures were determined by X-ray diffraction method. Meanwhile, the assembly between the modulated ligand, di(2-pyrazinecarbaldehyde)-6,6′-dicarboxylic acid hydrazone-2,2′-bipyridine (H2L3) and mixed metal salts of nickel and silver yields a 1D coordination polymer Ni2Ag2(HL3)2(ClO4)2(CH3CN)3 (3). The crystal structure revealed that, in the compound 3, molecular box as metallosupramolecular secondary building units, can be interconnected via the external Ag-N coordination to construct metallosupramolecular aggregate. Another intriguing structure feature of the compound 3 in the solid state is that it forms two-dimensional porous frameworks through the stacking of the 1D aggregated molecular box, in which counter anions and guest solvent molecules are resided. CCDC: 640381, 1, 640382, 2, 640383, 3. | |
| Keywords: helicate molecular box pore structure hierachical self-assembly coordination polymer | |
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| 吴大雨,黄薇,李庚,谢黎霞,段春迎,孙巧珍,孟庆金.镍螺旋化合物及其杂银配位聚合物的设计合成与结构(英文)[J].无机化学学报,2007,23(7):1129-1136. | |
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