Preparation and characterization of ionic complex salts based on benzotriazolium cations

Ionic liquid based on benzotriazolium ions were synthesized. these ionic liquids were characterized by IR, UV, Conductivity measurements and elemented analysis. There ionic salts with Co +2 , Ni +2 ,Cu +2 and Zn +2 of *correspondance authour Preparation and characterization of ionic complex salts based on ... 20 the types [A] + 2[MCl2I2] and [A`] + [MCl2I2], where A= benzotriazolium cation +1 , A` = benzotriazolium cation +2 , M = Co +2 , Ni +2 , Cu +2 and Zn +2 were prepared and characterized by elemental analysis, molar conductance, IR, UV∕V is, metal content and magnetic measurements. The results of electronic spectra and magnetic measurements showed that the anions of the type [MCl2I2] have tetrahedral and square planer geometry around the metal ions. Introduction Ionic liquid have been exploited in different research area due to their unique physiochemical properties, such as negligible vapor pressure, thermal and chemical stability, which make them vary promising materials to replace volatile organic solvents in several application such as synthesis and purification[1-4]. Metal containing ionic liquids and ionic liquid crystals based on imidazolium moiety that is metal complexes of imidazolium salts. They have realized as versatile reaction media, catalyst, catalyst precursors and reagents for various chemical processes include nonmaterial[5-6]. The two isomorphism imidazolium salts [EMIM]2 [MCl4] (M= Co or Ni) were prepared directly by mixing the corresponding metal chloride with [EMIM]Cl (EMIM= 1-ethyl-3-methyl-imidazoliume) [7]. Crystal structure studies showed extended hydrogen bonding net-works were observed between [MCl4] -2 chlorides and hydrogen of the hetero atom ring Palgunadi et.al.[8] prepared and used the [RMIM][ZnX2Y2] ionic liquid system (R=Me, Et, n.Bu, benzyl, X= Y=Cl or Br, X=Cl, Y=Br) for the coupling reaction of CO2 and ethylene to produce cyclic carbonates. Crystal structure of [Me2IM][ZnBr2Cl2] showed that two imidazolium cations paired with [ZnBr2Cl2]. Deetleft. et. al. [9] prepared the thiozolium based gold (III) compound [BMT2][AuBrCl3] from the reaction of 3-butyl-4methylthiazolium bromide [BMT2]Br with HAuCl4 or NaAuCl4. Formation of mixed ion could be due the substitution of chloride by softer bromide. In view of these interesting results and as continuation of our studies on transition metal ionic salts [10-12], we have prepared new ionic salts of Co +2 , Ni +2 , Cu +2 and Zn +2 based benzotrizolium cation Fig 1