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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 -412.6582029
correlated core -412.7160801
difference -0.0578771
  Energy (hartrees)
frozen core -412.6598493
correlated core -412.7176385
difference -0.0577892