The RDF between the centers-of-mass of the ions and the solvents has been calculated in order to study the microstructure of the ILs. Here, we focus on the cation-cation, anion-anion, cationanion and solvent-solvent distribution in order to analyze and provide an insightful average picture of the IL/carbonate structure. The center-of-mass RDF for [EMI] + cation exhibit weak but clearly visible broad peak at around 2.8 Å. As shown in Figure , for the [EMI] + cation ring centers, the existence of broad peak shows weak but clear ordering. There seems to be a first shell of neighboring cations at around 2.8 Å. This finding is different from other previously reported results about simulation studies of more polar and hydrophilic IL 1-ethyl-3-methylimidazolium acetate with water where no clear ordering was observed . The intensity (height) of the peaks increases the in the order D 1 > E 1 > F 1 > G 1 , indicating that the ordering between the [EMI] + cations is enhanced by the addition of EC/DMC carbonate in the mixture (Figure )). Our results in this study show that the first maxima of center-of-mass distance for [EMI] + cations appear at smaller distances than for other aromatic systems, e.g. benzene, where the first maximum is found at around 5.75 Å [125].