首页> 外文期刊>European journal of inorganic chemistry >Redox Reaction between Main-Group Elements (Te, Sn, Bi) and N-Heterocyclic-Carbene-Derived Selenium Halides: A Facile Method for the Preparation of Monomeric Halides
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Redox Reaction between Main-Group Elements (Te, Sn, Bi) and N-Heterocyclic-Carbene-Derived Selenium Halides: A Facile Method for the Preparation of Monomeric Halides

机译:主族元素(Te,Sn,Bi)与N-杂环卡宾衍生的卤化硒之间的氧化还原反应:一种制备单体卤化物的简便方法

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摘要

The synthesis and characterization of substituted benzimidazolin- 2-selones (4c-4d) and -tellone (4i) are reported. Upon reaction with halogens (I_2, Br_2, and Cl_2), these selones and tellone yield dihaloselones/tellone (5c-5i). The reaction of dihaloselones with elemental tellurium/tin/bismuth leads to the formation of selone-coordinated monomeric tellurium tetrahalides, tellurium dibromide (8), tin tetrahalides, and bismuth triiodide adducts (7a-7g), respectively. The structures of the tellurium tetrahalide (7a, 7d, and 7g), tellurium dibromide (8), tin tetrahalide, and bismuth triiodide adducts have been established by single-crystal X-ray analysis. The bismuth triiodide adduct is the first neutral tetrameric structure with selones. The bismuth adduct has been used as a single-source precursor for the synthesis of bismuth selenide (Bi_2Se_3) nanoparticles, which were characterized by powder XRD patterns. The TEM images show the hexagonal shape of the nanoparticles.
机译:报道了取代的苯并咪唑啉-2-硒酮(4c-4d)和-tellone(4i)的合成和表征。与卤素(I_2,Br_2和Cl_2)反应后,这些色氨酸和碲酮会生成二卤酮/司tellone(5c-5i)。二卤酮与元素碲/锡/铋的反应分别导致了硒配位的单体四卤化碲,二溴化碲(8),四卤化锡和三碘化铋加合物(7a-7g)的形成。四卤化碲(7a,7d和7g),二溴化碲(8),四卤化锡和三碘化铋加合物的结构已通过单晶X射线分析确定。三碘化铋加合物是首个具有色氨酸的中性四聚体结构。铋加合物已用作合成硒化铋(Bi_2Se_3)纳米粒子的单源前体,其特征是粉末XRD图谱。 TEM图像显示纳米颗粒的六边形形状。

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