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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Two-Dimensional Divalent Metal Coordination Polymers Containing 3,4 '-Dipyridylketone Tethers: Layer Topology Tuning by Anion Binding Preferences
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Two-Dimensional Divalent Metal Coordination Polymers Containing 3,4 '-Dipyridylketone Tethers: Layer Topology Tuning by Anion Binding Preferences

机译:包含3,4'-二吡啶基酮系链的二维二价金属配位聚合物:通过阴离子键合偏好进行层拓扑调整

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摘要

Slow diffusion of aqueous cobalt thiocyanate or cadmium perchlorate and ethanolic solutions of 3,4'-dipyridylketone (3,4'-dpk) generated the coordination polymers {[Co(NCS)(2)(3,4'-dpk)(2)]center dot 2H(2)O}(n) (1) and {[Cd(H2O)(2)(3,4'-dpk)(2)](ClO4)(2)center dot 2H(2)O}(n) (2), which were structurally characterized by single-crystal X-ray diffraction. The structure of I consists of interdigitated neutral [Co(NCS)(2)(3,4'-dpk)(2)](n) (4,4) rectangular grid coordination polymer layers. However, compound 2 manifests cationic [Cd(H2O)(2)(3,4'-dpk)(2)](n)(2n+) two-dimensional (6,3) herringbone lattices connected through hydrogen bonding mediated by interlamellar unligated perchlorate anions. Upon excitation with ultraviolet radiation, 2 emits blue-violet light, ascribed to pi-pi* transitions within the pyridyl rings of the 3,4'-dpk ligands. Thermal decomposition behavior of 1 is also discussed.
机译:硫氰酸钴或高氯酸镉水溶液的缓慢扩散以及3,4'-联吡啶酮(3,4'-dpk)的乙醇溶液生成配位聚合物{[Co(NCS)(2)(3,4'-dpk)(2 )]中心点2H(2)O}(n)(1)和{[Cd(H2O)(2)(3,4'-dpk)(2)](ClO4)(2)中心点2H(2) O}(n)(2),其结构通过单晶X射线衍射表征。 I的结构由相互交叉的中性[Co(NCS)(2)(3,4'-dpk)(2)](n)(4,4)矩形网格配位聚合物层组成。但是,化合物2表现出阳离子[Cd(H2O)(2)(3,4'-dpk)(2)](n)(2n +)二维(6,3)人字形晶格,其通过未键合的层间介导的氢键连接高氯酸根阴离子。在紫外线激发下,2发出蓝紫色光,这归因于3,4'-dpk配体的吡啶环内的pi-pi *跃迁。还讨论了1的热分解行为。

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