...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Discrete Binuclear Cobalt(III) Bis-dioximates with Wheel-and-Axle Topology as Building Blocks To Afford Porous Supramolecular Metal-Organic Frameworks
【24h】

Discrete Binuclear Cobalt(III) Bis-dioximates with Wheel-and-Axle Topology as Building Blocks To Afford Porous Supramolecular Metal-Organic Frameworks

机译：具有轮轴拓扑的离散双核双（双）双-二氧肟酸酯类，可满足多孔多孔超分子金属-有机骨架的需求

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Three binuclear and one mononuclear cobalt-(III) dioximates with the compositions [Co-2(dmgH)(4)(bpy)Cl-2]center dot 1.5 dmf (1), [Co-2(nioxH)(4)(bpy)Cl-2]center dot 0.5H(2)O (2), [Co-2(dmgH)(4)(bpe)Cl-2]center dot 0.5H(2)O (3), and [Co(dmgH)(2)(bpy)-Cl]center dot H2O (4) (where dmgH(2) = dimethylglyoxime, nioxH(2) = 1,2-cyclohexanedionedioxime, bpy = 4,4'-bipyridine, bpe = 1,2-bis(4-pyridyl)ethane, and dmf = N,N-dimethylformamide) were prepared by replacement of water molecule in Co(III) mononuclear dioximates by bpy and bpe ligands. All compounds were characterized by single -crystal X-ray diffraction and spectroscopic techniques. In all complexes Co(III) atoms have an identical octahedral N5Cl environment formulated by four nitrogen atoms of two mono-deprotonated oxime ligands in a square planar mode, and the nitrogen atom of the bpy/bpe molecules and chloride atom in the axial positions. In 1-3 bpy/bpe exobidentate spacer ligands serve as bridging "rods" and unite two planar cobalt(III) bis-dioximates in binuclear complex with wheel -and -axle topology. The packing of bulky binuclear complexes results in formation of porous structure with hourglass -like channels of diameter ca. 0.6-1.3 nm in the crystal of compound 1 and smaller cavities in 2. The sorption properties for 1 were also measured. The pi center dot center dot center dot pi stacking interaction between monodentate bpy ligands of mononuclear complexes 4 emulate supramolecular binuclear assembly with wheel -and -axle topology.
机译：组成为[Co-2（dmgH）（4）（bpy）Cl-2]中心点1.5 dmf（1），[Co-2（nioxH）（4）（ bpy）Cl-2]中心点0.5H（2）O（2），[Co-2（dmgH）（4）（bpe）Cl-2]中心点0.5H（2）O（3）和[Co （dmgH）（2）（bpy）-Cl]中心点H2O（4）（其中dmgH（2）=二甲基乙二肟，nioxH（2）= 1,2-环己烷二酮二肟，bpy = 4,4'-联吡啶，bpe = 1通过用bpy和bpe配体代替单核二肟酸Co（III）中的水分子来制备1,2-双（4-吡啶基）乙烷和dmf = N，N-二甲基甲酰胺。所有化合物均通过单晶X射线衍射和光谱技术表征。在所有配合物中，Co（III）原子具有相同的八面体N5Cl环境，该环境由两个单去质子化的肟配体的四个氮原子以方形平面模式组成，bpy / bpe分子的氮原子和氯原子位于轴向位置。在1-3 bpy / bpe中，明显的间隔基配体充当桥“棒”，并在双核复合物中以轮-轴拓扑连接两个平面的钴（III）双-二恶英。庞大的双核复合物的堆积导致形成带有直径约为0的沙漏状通道的多孔结构。在化合物1的晶体中0.6-1.3 nm，在化合物2的晶体中的腔较小。还测量了化合物1的吸附性能。单核络合物4的单齿bpy配体之间的pi中心点pi中心点pi堆积相互作用模拟了具有轮轴拓扑的超分子双核组件。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号