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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >One- and two-dimensional CdII coordination polymers constructed from 2-(2-methyl-1H-benzimidazol-1-yl)acetate ligands
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One- and two-dimensional CdII coordination polymers constructed from 2-(2-methyl-1H-benzimidazol-1-yl)acetate ligands

机译：由2-（2-甲基-1H-苯并咪唑-1-基）乙酸酯配体构成的一维和二维CdII配位聚合物

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摘要

The one- and two-dimensional polymorphic cadmium polycarboxylate coordination polymers, catena-poly[bis[μ2-2-(2-methyl-1H-benzimidazol-1-yl)acetato-κ3N3:O,O′]cadmium(II)], [Cd(C10H9N2O2)2]n, and poly[bis[μ2-2-(2-methyl-1H-benzimidazol-1-yl)acetato-κ3N3:O,O′]cadmium(II)], also [Cd(C10H9N2O2)2]n, were prepared under solvothermal conditions. In each structure, each CdII atom is coordinated by four O atoms and two N atoms from four different ligands. In the former structure, two crystallographically independent CdII atoms are located on twofold symmetry axes and doubly bridged in a μ2-N:O,O′-mode by the ligands into correspondingly independent chains that run in the [100] and [010] directions. Chains containing crystallographically related CdII atoms are linked into sheets viaπ–π stacking interactions. Sheets containing one of the distinct types of CdII atom are stacked perpendicular to [001] and alternate with sheets containing the other type of CdII atom. The second complex is a two-dimensional homometallic CdII (4,4) net structure in which each CdII atom is singly bridged to four neighbouring CdII atoms by four ligands also acting in a μ2-N:O,O′-mode. A square-grid network results and the three-dimensional supramolecular framework is completed by π–π stacking interactions between the aromatic ring systems.
机译：一维和二维多晶型多羧酸镉配位聚合物，阳离子-聚[双[μ2-2-（2-甲基-1H-苯并咪唑-1-基）乙酰基-κ3N3：O，O']镉（II）] ，[Cd（C10H9N2O2）2] n和聚[双[μ2-2-（2-甲基-1H-苯并咪唑-1-基）乙酰基-κ3N3：O，O']镉（II）]，也[Cd （C10H9N2O2）2] n是在溶剂热条件下制备的。在每个结构中，每个CdII原子均由来自四个不同配体的四个O原子和两个N原子配位。在前一种结构中，两个晶体学上独立的CdII原子位于两个对称轴上，并通过μ2-N：O，O'-模式通过配体双桥成分别在[100]和[010]方向上延伸的独立链。包含与晶体学相关的CdII原子的链通过π-π堆积相互作用链接成片。包含一种不同类型的CdII原子的薄片垂直于[001]堆叠，并与包含另一种类型的CdII原子的薄片交替排列。第二种络合物是二维同金属CdII（4,4）网状结构，其中每个CdII原子通过四个也以μ2-N：O，O'-模式起作用的配体单价桥接至四个相邻CdII原子。产生一个正方形网格网络，并通过芳香环系统之间的π-π堆叠相互作用完成三维超分子框架。

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