L-Methyl-3-octylimidazolium tetrafluoroborate

The ionic liquid l-methyl-3-octylimidazolium tetrafluoroborate was purchased from the Sigma-Aldrich and carefully pnuified. 

Densities, Refractive Indices, and Viscosities of the Ionic Liquids l-Methyl-3-octylimidazolium Tetrafluoroborate and l-Methyl-3-butylimidazolium Perchlorate and Their Binary Mixtures with Ethanol at Several Temperatures. J.Chem.Eng.Data, 53, 3 (March. 2008) 677-682. 

Harris, K R. Kanakubo, M. Woolf, L. A. (2006). Temperature and pressure dependence of the viscosity of the ionic liquids l-methyl-3-octylimidazolium hexafluorophosphate and l-methyl-3-octylimidazolium tetrafluoroborate. /. Chem. Eng. Data, Vol. 51, No. 3,1161-1167, ISSN 0021-9568... 

Scheme 1. The differences in the structure of the cationic and anionic part of the investigated RTILs [C8Hi70CH2-CiIm] [BFJ, (l-methyl-3-octyloxymethylimidazolium tetrafluoroborate) (ILl) [C6Hi30CH2-CiIm][(Cp3S02)2N], (l-methyl-3-hexyloxymethylimidazolium bis(trifluoromethylsulfonyl) imide) (IL2) [C8Hi70CH2-CiIm][(CF3S02)2N], (l-methyl-3-octyloxymethylimidazoliumbis(trifluoromethylsulfonyl)imide) (IL3) [Cs-Cilm] [BFJ, (1-methyl-3-octylimidazolium tetrafluoroborate) (IL4).

In one of the first studies, Stepnowski Zaleska compared the effectiveness of three methods UV photodegradation, UV photolysis of hydrogen peroxide, and photocatalysis on UV-irradiated Ti02. For these investigations imidazolium ILs with different alkyl chain length were chosen (1-butyl-, l-hexyl-3-methylimidazolium, l-methyl-3-octylimidazolium, l-ethyl-3-ethylimidazolium chloride or tetrafluoroborate, methyl imidazole as reference). The stability of these compoxmds with respect to all the photodegradation methods used... 

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