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Energy differences between frozen core and full core for CCSD(T)/cc-pVQZ

19 06 19 13 52
For ()
  Energy (hartrees)
frozen core -77.0936232
correlated core -77.1514784
difference -0.0578552
  Energy (hartrees)
frozen core -77.1485378
correlated core -77.2053290
difference -0.0567912