Preparation of zinc trifluoromethanesulphonate and its properties

Abstract

Zinc trifluoromethanesulphonate (Zn(CF₃SO₃)₂) was prepared. Its purity was better than 98.7%. The zinc salt did not decompose below 600 °C. It was soluble in 100 g of methanol, ethanol, acetonitrile, N,N-dimethyl formamide and formamide at 25 °C in amounts of 117 g, 63.9 g, 71.8 g, 42.7 g and 29.8 g respectively. A maximum conductivity of 300 μS cm^-1 was observed in methanol solution. The molar conductivity at 45 °C at infinite dilution was 132 ω^-1 cm² mol^-1 for methanol solution, 147 ω^-1 cm² mol^-1 for N,N-dimethylformamide solution, 20.5 ω^-1 cm² mol^-1 for ethanol solution, 80 ω^-1 cm² mol^-1 formamide solution and 137 ω^-1 cm² mol^-1 for acetonitrile solution.