Five XCFs have been tested, with the aim of evaluating the impact of the exact exchange percentage: we tested two global hybrid functionals, namely B3LYP, and BH&HLYP, with respectively 20% and 50% of exact exchange and three rangeseparated functionals, namely CAM-B3LYP which has an exact exchange going from 19 to 65% and a range separation parameter 𝜔 of 33 Bohr -1 , and two different versions of the LC-BLYP for which the exact exchange ranges from 0 to 100% and the range separation parameter of 0.47 and 0.33 Bohr -1.