“…A similar order-of-magnitude savings as the hybrid F12-TcCR+DZ QFF has been shown for combining F12-TcCR harmonics with density functional theory (DFT) cubic and quatic terms . Most DFT functionals behave the same, but PBE0 typically provides the most consistent results . However, as the size of the molecule in question increases, the number of harmonic points in the QFF quickly decreases relative to the whole total number of points. , Hence, these hybrid methods will provide better scaling as the size of (number of atoms within) the molecule increases.…”