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首页> 外文期刊>New Journal of Chemistry >Synthesis, structural analysis, and supramolecular assembly of a series of in situ generated uranyl-peroxide complexes with functionalized 2,2 '-bipyridine and varied carboxylic acid ligands
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Synthesis, structural analysis, and supramolecular assembly of a series of in situ generated uranyl-peroxide complexes with functionalized 2,2 '-bipyridine and varied carboxylic acid ligands

机译:用官能化2,2'-苯吡啶和多种羧酸配体的一系列原位产生的原位产生铀基 - 过氧化物复合物的合成,结构分析和超分子组装

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摘要

The crystal structures of eight new binuclear peroxo-bridged uranyl (UO22+) complexes containing chelating N-donating ligands (2,2'-bipyridine [BPY] and 4,4'-dibromo-2,2'-bipyridine [BrBPY]) and various O-donating ligands (m-halobenzoic acid (where halo = fluoro, chloro, or iodo), p-toluic acid, 2-thiophenecarboxylic acid, acetic acid, benzoic acid, and p-(bromomethyl)-benzoic acid [BrMeBA]) are reported. Single crystal and powder X-ray diffraction analyses have been used to characterize these materials and provide insight into local coordination environments and supramolecular assembly, including p-stacking and halogen-based interactions. The bridging-peroxide ligands were generated in situ via photoexcitation of the uranyl cation induced by incident sunlight. Notably, five of the eight complexes presented have linear U-O-2-U dihedral angles and the non-covalent interactions (NCIs) observed in all complexes suggest a direct influence on this structural feature.
机译:含有螯合N-排配体的八个新的双核过氧桥钌(UO22 +)配合物的晶体结构(2,2'-硼烷[Bpy]和4,4'-dibromo-2,2'- Bi吡啶[Brbpy])和 各种o型配体(M-卤苯甲酸(其中卤钴=氟,氯,碘),质甲酸,2-噻吩羧酸,乙酸,苯甲酸和p-(溴甲基) - 苯甲酸[BRMEBA] 报道)据报道。 已经使用单晶和粉末X射线衍射分析来表征这些材料并提供对局部配位环境和超分子组件的洞察,包括P堆叠和基于卤素的相互作用。 通过入射阳光诱导的铀酰基阳离子的光透明的桥接 - 过氧化物配体原位产生。 值得注意的是,呈现的八个复合物中的五个具有线性U-O-2-U二相角,并且在所有复合物中观察到的非共价相互作用(NCI)表明对该结构特征的直接影响。

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