where EN1e stands for the sum of nuclear repulsion and one-electron energy terms; EX,HF represents the exact exchange and cX,HF the corresponding coefficient; EX,DFT is the exact exchange energy component from the semilocal generalized gradient approximation (GGA) and cX,DFT is the corresponding parameter. EC,DFT represents the semilocal GGA correlation component, and cC,DFT is the coefficient for that energy part. E2ab,κ-PT2 and E2ss,κ-PT2 are the opposite-spin and same-spin κ-GLPT2 correlation energies, and their respective linear coefficients are c2ab and c2ss. Finally, Edisp is a dispersion correction such as D3(BJ) with any associated adjustable parameters: in the present work (as in Ref. ), the nonlinear damping-function shape parameters are fixed at a1=0, a2=5.5, and the higher-order coefficient is fixed at s8=0 (as we have found to be appropriate for double hybrids).