DFT Functionals Double Hybrid Many DFT functionals have been added to Gaussian since the initial release of G16, including APFD, functionals from the Truhlar group (most recently MN15 and MN15L) and PW6B95 & PW6B95D3. Additional double-hybrid methods: DSDPBEP86, PBE0DH, PBEQIDH. Emperical dispersion is available for a variety of functionals lacking it, using the schemes of Grimme (GD2, GD3, GD3BJ) and others. The PM7 semi-emperical method is available, both with modifications for continuous potential energy surfaces and in the original formulation.
