Crystal Structures of 1-Isopropyl-3-methylimidazolium Iodide and 2,3-Dimethyl-1-isopropylimidazolium Iodide

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  • FUJIMOTO Takashi
    Department of Chemistry, College of Science and Technology, Meisei University
  • KAWAHATA Masatoshi
    Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University CREST, Japan Science and Technology Agency (JST)
  • NAKAKOSHI Masamichi
    Chemical Analysis Center, Yokohama National University
  • MACHINAMI Tomoya
    Department of Chemistry, College of Science and Technology, Meisei University
  • SEKI Hiroko
    CREST, Japan Science and Technology Agency (JST) Chemical Analysis Center, Chiba University
  • TASHIRO Mitsuru
    Department of Chemistry, College of Science and Technology, Meisei University

Description

Crystals of 1-isopropyl-3-methylimidazolium iodide and 2,3-dimethyl-1-isopropylimidazolium iodide were prepared and their crystal structures were determined at orthorhombic space groups Pbca and Pnma, respectively. The cell parameters were a = 10.011(4), b = 13.081(4), c = 14.811(4)Å, Z = 8 and a = 11.802(4), b = 7.437(2), c = 12.010(4)Å, Z = 4 in the aforesaid order. The substitution of a methyl group for a proton of the imidazole ring differentiated the crystal packing of the title compounds as well as van der Waals interactions.

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