parametrized in this work following the standard procedure (see above). For the rest of the 135 methylenes in the n-carbon alkyl chain, the multipoles were taken directly from [BMIm], also parametrized in this work, following the original procedure. The same idea was applied to symmetric cations. The basic structure for this type of cations is [diBIm], and its basic structure was tested by transferring parameters to similar symmetric cations with longer alkyl chains, for example [di6Im].