3 Results and discussion ima that are too high and too far. These two functionals also behave alike when it comes to the O-H and H-H distributions that are slightly understructured compared to experiment. Although yielding similar RDFs, it is interesting to recall that M06-L and M11-L do not share the same exchange and correlation functional forms as well as training data, and that M11-L is range-separated (Table ). However, both fulfill the UEG limit. For the remaining functionals where this constraint is lifted (revM06-L, MN12-L, MN15-L), the O-H and H-H RDFs move even further away from the experiment and no longer capture the hydrogen-bond network as shown by the smearing out of the second peak in the g OH distributions. The revM06-L functional has the same XC form as M06-L, but differs in the imposed constraints and training data.