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首页> 外文期刊>Crystal growth & design >Crystal engineering with the uranyl cation II. Mixed aliphatic carboxylate/aromatic pyridyl coordination polymers: Synthesis, crystal structures, and sensitized luminescence
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Crystal engineering with the uranyl cation II. Mixed aliphatic carboxylate/aromatic pyridyl coordination polymers: Synthesis, crystal structures, and sensitized luminescence

机译：带有铀酰阳离子II的晶体工程。混合脂肪族羧酸盐/芳族吡啶基配位聚合物：合成，晶体结构和敏化发光

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摘要

Eleven novel U(VI)-containing coordination polymers have been synthesized under hydrothermal conditions and characterized via single-crystal X-ray diffraction and fluorescence spectroscopy. These inorganic/organic hybrid materials represent an important advance in the synthesis of polymeric materials in that multiple organic species have been employed in an effort to influence topology and properties. This family of materials is thus the result of a systematic pairing of the uranyl cation, UO22+, with aliphatic dicarboxylates (see part I, this issue) and the dipyridyl species, 4,4'-dipyridyl and 1,2-bis(4-pyridyl)ethane. This second organic component assumes a number of roles in these structures, including direct coordination, charge balance, and structure direction. Distinction between which role(s) the dipyridyl species will assume appears to be correlated to the size (length) matching between it and the dicarboxylate linker used. Further, polymerization of primary building units (i.e., monomeric uranyl species) to form novel tetrameric secondary building units is observed in four compounds, possibly as a compensation for size differential between the organic species.
机译：在水热条件下合成了11种新型的含U（VI）的配位聚合物，并通过单晶X射线衍射和荧光光谱对其进行了表征。这些无机/有机杂化材料代表了聚合材料合成的重要进展，因为已采用多种有机物质来影响拓扑和性能。因此，该材料家族是铀酰阳离子UO22 +与脂肪族二羧酸酯（请参阅本期第一部分）与双吡啶基物质4,4'-双吡啶基和1,2-双（4-）进行系统配对的结果吡啶基）乙烷。第二个有机组成部分在这些结构中担当许多角色，包括直接配合，电荷平衡和结构方向。二吡啶基物质将承担哪种作用似乎与它与所用的二羧酸酯连接基之间的大小（长度）匹配有关。此外，在四种化合物中观察到一级结构单元（即，单体尿烷基物质）的聚合反应形成新的四聚二级结构单元，这可能是对有机物之间尺寸差异的补偿。

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