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Energy differences between frozen core and full core for CCSD/cc-pVTZ

19 06 19 13 52
For ()
  Energy (hartrees)
frozen core -685.4190182
correlated core -685.4911240
difference -0.0721057
  Energy (hartrees)
frozen core -685.4191333
correlated core -685.4912690
difference -0.0721357