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Energy differences between frozen core and full core for MP2/aug-cc-pVQZ

19 06 19 13 52
For ()
  Energy (hartrees)
frozen core -685.5526682
correlated core -685.7096451
difference -0.1569769
  Energy (hartrees)
frozen core -685.5534409
correlated core -685.7103526
difference -0.1569117