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Energy differences between frozen core and full core for CCSD/6-311+G(3df,2p)

19 06 19 13 52
For SBr (Sulfur monobromide radical)
  Energy (hartrees)
frozen core -77.0748343
correlated core -77.1198789
difference -0.0450446
  Energy (hartrees)
frozen core -77.1125254
correlated core -77.1565318
difference -0.0440064