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# OCC

Performs orbital-optimized MPn and CC computations and conventional MPn computations.

- `CEPA(0) TOTAL ENERGY`
- `CURRENT CORRELATION ENERGY`
- `CURRENT ENERGY`
- `CURRENT REFERENCE ENERGY`
- `MP2 CORRELATION ENERGY`
- `MP2 OPPOSITE-SPIN CORRELATION ENERGY`
- `MP2 SAME-SPIN CORRELATION ENERGY`
- `MP2 TOTAL ENERGY`
- `MP2.5 CORRELATION ENERGY`
- `MP2.5 TOTAL ENERGY`
- `MP3 CORRELATION ENERGY`
- `MP3 TOTAL ENERGY`
- `OCEPA(0) CORRELATION ENERGY`
- `OCEPA(0) TOTAL ENERGY`
- `OMP2 CORRELATION ENERGY`
- `OMP2 TOTAL ENERGY`
- `OMP2.5 CORRELATION ENERGY`
- `OMP2.5 TOTAL ENERGY`
- `OMP3 CORRELATION ENERGY`
- `OMP3 TOTAL ENERGY`
- `SCS-MP2 CORRELATION ENERGY`
- `SCS-MP2 TOTAL ENERGY`
- `SCS-MP2-VDW CORRELATION ENERGY`
- `SCS-MP2-VDW TOTAL ENERGY`
- `SCS-MP3 CORRELATION ENERGY`
- `SCS-MP3 TOTAL ENERGY`
- `SCS-MP3-VDW CORRELATION ENERGY`
- `SCS-MP3-VDW TOTAL ENERGY`
- `SCS-OCEPA(0) CORRELATION ENERGY`
- `SCS-OCEPA(0) TOTAL ENERGY`
- `SCS-OMP2 CORRELATION ENERGY`
- `SCS-OMP2 TOTAL ENERGY`
- `SCS-OMP2-VDW CORRELATION ENERGY`
- `SCS-OMP2-VDW TOTAL ENERGY`
- `SCS-OMP3 CORRELATION ENERGY`
- `SCS-OMP3 TOTAL ENERGY`
- `SCS-OMP3-VDW CORRELATION ENERGY`
- `SCS-OMP3-VDW TOTAL ENERGY`
- `SCSN-MP2 CORRELATION ENERGY`
- `SCSN-MP2 TOTAL ENERGY`
- `SCSN-MP3 CORRELATION ENERGY`
- `SCSN-MP3 TOTAL ENERGY`
- `SCSN-OMP2 CORRELATION ENERGY`
- `SCSN-OMP2 TOTAL ENERGY`
- `SCSN-OMP3 CORRELATION ENERGY`
- `SCSN-OMP3 TOTAL ENERGY`
- `SOS-MP2 CORRELATION ENERGY`
- `SOS-MP2 TOTAL ENERGY`
- `SOS-MP3 CORRELATION ENERGY`
- `SOS-MP3 TOTAL ENERGY`
- `SOS-OCEPA(0) CORRELATION ENERGY`
- `SOS-OCEPA(0) TOTAL ENERGY`
- `SOS-OMP2 CORRELATION ENERGY`
- `SOS-OMP2 TOTAL ENERGY`
- `SOS-OMP3 CORRELATION ENERGY`
- `SOS-OMP3 TOTAL ENERGY`
- `SOS-PI-MP2 CORRELATION ENERGY`
- `SOS-PI-MP2 TOTAL ENERGY`
- `SOS-PI-MP3 CORRELATION ENERGY`
- `SOS-PI-MP3 TOTAL ENERGY`
- `SOS-PI-OMP2 CORRELATION ENERGY`
- `SOS-PI-OMP2 TOTAL ENERGY`
- `SOS-PI-OMP3 CORRELATION ENERGY`
- `SOS-PI-OMP3 TOTAL ENERGY`

### Navigation

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- modules
- toc
- next
- previous
- PSI4 [beta5] »
- Appendices »
- PSI Variables by Module »