| 基于刚性四面体含硅配体构筑的两个钴配位聚合物及其结构多样性 |
| Structural Diversity of Coordination Polymers Built from a Rigid Silicon-Based Tetracarboxylate Linker |
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| 摘要: 基于四齿刚性羧酸配体H4L(H4L=4,4',4",4"'-silanetetrayltetrabenzoic acid)在水热条件下合成了2个微孔配位聚合物,分别是[CoL][NH2(CH3)2]2·2.25H2O(1)和[Co3L2]H3O]2·4DMA(2)(DMA=N,N-二甲基乙酰胺)。晶体结构分析表明这2个化合物均属于正交晶系,晶体1的空间群是Pbca,晶胞参数是a=2.2702(2)nm,b=1.4565(7)nm,c=2.8264(7)nm,晶体2的空间群是Pnna,晶胞参数是a=2.6982(3)nm,b=2.1882(2)nm,c=1.3821(9)nm。化合物1是由四面体型的单核钴和4-连接的配体构成的sra拓扑的三维结构。化合物2是由三核钴{Co3(COO)8}和4-连接的四面体型配体构成的、带有一维孔道的双节点(4,8)-连接的alb三维网络结构。讨论了由H4L构成的配位聚合物的结构多样性。 |
| 关键词: 配位聚合物 晶体结构 钴 配体 |
| 基金项目: 国家自然科学基金(No.21173153),四川省科技厅科技支撑项目(2011GZ0035)资助。 |
| Abstract: By using a rigid tetrapodal carboxylate linker 4,4',4",4"'-silanetetrayltetrabenzoic acid (H4L), two open-framework coordination polymers, namely, [CoL][NH2(CH3)2]2·2.25H2O (1) and [Co3L2]H3O]2·4DMA (2) (DMA=N, N-Dimethylacetamide), were solvothermally synthesized and structurally characterized. The crystal structure analyses indicate that both compounds crystallize in orthorhombic system. The unit cell parameters for compound 1 are space group Pbca, a=2.2702(2) nm, b=1.4565(7) nm, c=2.8264(7) nm, and for compound 2, space group Pnna, a=2.6982(3) nm, b=2.1882(2) nm, c=1.3821(9) nm. Compound 1 is a 3D framework built on tetrahedral Co units and a 4-connecting ligand Lto give a 4-connected sra structure. Compound 2 is a 3D 2-nodal (4,8)-connected alb network with small 1D channels built from a trinuclear {Co3(COO)8} unit and a 4-connected tetrahedral Lligand. The structure diversity of H4L-based MOFs is discussed. |
| Keywords: coordination polymer crystal structure cobalt ligand |
| 投稿时间：2014-11-08 修订日期：2015-02-13 |
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| 薛云珊,许岩,杜红宾.基于刚性四面体含硅配体构筑的两个钴配位聚合物及其结构多样性[J].无机化学学报,2015,31(5):981-988. |
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