1-Alkyl-4-Amino-1.2.4-Triazolium Salts, New Families of Ionic Liquids

摘要

New classes of ionic liquids based upon the halide and nitrate salts of 1-alkyl substituted-4 amino-1,2,4-triazolium cations (n-alkyl =methyl -decyl, isopropyl, ally, and methylcylcopropyl) have been synthesized, characterized by vibrational spectra, multinuclear nmr, elemental analysis, and DSC studies. Single crystal x-ray diffraction studies were carried out on 1-isopropyl-4- amino-1,2,4-triazolium bromide, 1 -ethyl-4-amino- 1 ,2,4-triazolium bromide, 1 - n-propyl-4-amino- 1 ,2,4-triazolium bromide, 1-n- hexyl-4-amino-1 ,2,4- triazolium bromide, and 1-n-heptyl-4- amino-1,2,4-triazolium bromide, as well as 1- isopropyl-4-amino-1,2,4-triazolium nitrate and 1-methylcyclopropyl-4-amino-1, 2,4-triazolium nitrate. The details of similarities, differences, and the effects of strong hydrogen bonding in the all of the structures will be discussed.