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Energy differences between frozen core and full core for CCSD(T)/TZVP

19 06 19 13 52
For ()
  Energy (hartrees)
frozen core -957.8641708
correlated core -957.9351114
difference -0.0709406
  Energy (hartrees)
frozen core -957.8654793
correlated core -957.9363484
difference -0.0708691