Zigzag Sheet Crystal Packing in a Halogen-bonding Imidazolium Salt: 1-Butyl-4,5-dibromo-3-methylimidazolium Iodide

Abstract

1-Butyl-4,5-dibromo-3-methylimidazolium iodide has been synthesized and structurally characterized by X-ray crystallography. This salt crystallizes in the monoclinic system, space group P21/n with cell parameters of a = 7.8471(6), b = 14.8581(11), c = 10.9176(8)Å, β = 98.5950(10)°, V = 1258.62(16)Å3, and Z = 4. The crystal structure was solved by a direct method and refined by full-matrix least squares to a final R value of 0.0253 with I > 2σ(I). This salt is organized into zigzag sheets with successive honeycomb-like frameworks through halogen bonding and hydrogen bonding. © The Japan Society for Analytical Chemistry.