Strongly bonded systems can be treated by quantum chemistry in a quick and satisfying manner; however, weak bonds, as found in weakly coordinating anions (WCAs) and ionic liquids (ILs) - compound classes of increasing preparative and theoretical interest - are much harder to describe. The predictive screening of possible new WCAs revealed compounds with interesting properties as possible targets for future syntheses in order to stabilize very reactive and/or strongly coordinating cations. Regarding ILs, it was demonstrated that in the cases in which a weak bond cannot be completely neglected,...