FNO-CCSDTQ(5)Λ with NO cutoffs of 0.0025 or 0.001, plus naive extrapolation from {0.005, 0.0025}, offers a practical low-cost route to quintuple excitation contributions in thermochemistry.
Petersson and David Feller and Kirk A
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FNO-CCSDTQ(5)$_\Lambda$ as an economical alternative for connected quintuple excitations contributions in coupled cluster thermochemistry
FNO-CCSDTQ(5)Λ with NO cutoffs of 0.0025 or 0.001, plus naive extrapolation from {0.005, 0.0025}, offers a practical low-cost route to quintuple excitation contributions in thermochemistry.
- A new open-shell CCSDTQ implementation and its application to the basis set convergence of post-CCSDT(Q) corrections in computational thermochemistry