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

19 06 19 13 52
For BS (Amidogen-d2)
  Energy (hartrees)
frozen core -115.4176011
correlated core -115.4227807
difference -0.0051796
  Energy (hartrees)
frozen core -115.4163389
correlated core -115.4215105
difference -0.0051715