Results for the def2-SVP and def2-TZVP basis sets show similar trends as T CutPNO is tightened (see triple-ζ errors. For the Karlsruhe basis sets, these errors are slightly larger than those obtained using Dunning basis sets and approach or exceed 10% of ∆E in two cases (ggg and bbr), but only when T CutPNO ≥ 10 -7 .