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Energy differences between frozen core and full core for QCISD(TQ)/cc-pCVTZ

19 06 19 13 52
For ()
  Energy (hartrees)
frozen core -412.7471338
correlated core -413.1086862
difference -0.3615524
  Energy (hartrees)
frozen core -412.7474204
correlated core -413.1088476
difference -0.3614272