by integrating the RDFs up to a cut-off radius r c . This cut-off radius was chosen as the minimum between the first and second peak of the RDF. By this, for the [Li] + -[NTf 2 ] -coordination number, a cut-off radius of 5.5 Å was obtained. The cut-off radius for the G3 coordination number of lithium was determined as 3.5 Å. Simultaneously, cut-off radii of 3.0 Å and 2.5 Å were derived for the lithium-oxygen coordination numbers of [NTf 2 ] -and G3, respectively. For the site-site RDFs of lithium and the oxygen atoms of the G3 molecules, the shoulder at 3 Å is not taken into account since this peak does not represent coordinating oxygen atoms.