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Updated: Jan 29, 2026

In Vitro Method to Control Concentrations of Halogenated Gases in Cultured Alveolar Epithelial Cells
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異常なハロゲン-ハロゲン相互作用は,放射性染色体組成を助ける

M A Niyas1, Remya Ramakrishnan1, Vishnu Vijay1

  • 1School of Chemistry , Indian Institute of Science Education and Research Thiruvananthapuram , Vithura, Thiruvananthapuram , Kerala , India 695551.

Journal of the American Chemical Society
|February 12, 2019
PubMed
まとめ

研究者らは,対称な放射線組成を形成する安定したヘクサブロミンシントン (Br6) を発見した. この発見はハロゲン結合の理解を前進させ,その安定化性質と超分子化学の可能性を明らかにします.

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Halogens

Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group. 
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Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
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Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
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