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All results from a given calculation for NaO2 (Sodium superoxide)

using model chemistry: QCISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-312.020512
Energy at 298.15K 
HF Energy-311.546057
Nuclear repulsion energy67.418636
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1211 1157 22.70      
2 A1 434 415 77.93      
3 B2 306 292 3.70      

Unscaled Zero Point Vibrational Energy (zpe) 975.7 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 932.3 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD/cc-pVTZ
ABC
1.15111 0.28844 0.23064

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.239
O2 0.000 0.677 -0.852
O3 0.000 -0.677 -0.852

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.19702.1970
O22.19701.3532
O32.19701.3532

picture of Sodium superoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na1 O2 O3 72.064 Na1 O3 O2 72.064
O2 Na1 O3 35.873
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability