DLPNO-CCSD(T) calculations were done with the iterative (T 1 ) triples correction and TightPNO settings. Additional calculations were done with the T CutP N O value changed to 10 -5 and 10 -6 , as well as 10 -8 for the def2-SVP and def2-TZVPP basis sets. CPS extrapolations were done following the equation: 22