Synthesis and crystal structures of 2-bromo-1,3-di­methyl­imidazolium iodides

Acta Crystallographica Section E: Crystallographic Communications

Lampl, M.¹  Laus, G.² 

[1] University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 8082, 6020 Innsbruck, Austria;University of Innsbruck, Institute of Mineralogy and Petrography, Innrain 52, 6020 Innsbruck, Austria

关键词: CRYSTAL STRUCTURE;    BROMO;    CHLOROFORM;    DICHLOROMETHANE;    IMIDAZOLE;    IODIDE;   

DOI  :  10.1107/S2056989018003390

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

Attempts at direct bromination of 1,3-di­methyl­imidazolium salts were futile. The title compounds, 2-bromo-1,3-di­methyl­imidazolium iodide chloro­form 0.33-solvate, C5H8BrN2+·I−·0.33CHCl3, 2-bromo-1,3-di­methyl­imidazolium iodide di­chloro­methane hemisolvate, C5H8BrN2+·I−·0.5CH2Cl2, and 2-bromo-1,3-di­methyl­imidazolium iodide hemi(diiodide), C5H8BrN2+·I−·0.5I2, were obtained by methyl­ation of 2-bromo-1-methyl­imidazole. They crystallized as CHCl3, CH2Cl2 or I2 solvates/adducts. The Br atom acts as a σ-hole to accept short C—Br⋯I inter­actions. C—H⋯I hydrogen bonds are observed in each structure.

【 授权许可】

CC BY