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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-311.930446
Energy at 298.15K 
HF Energy-311.532328
Nuclear repulsion energy67.014562
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 MP2/TZVP
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 1056 1001 9.20 21.85 0.33 0.50
2 A1 414 392 67.22 0.00 0.33 0.50
3 B2 1834 1739 335315.30 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1652.2 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 1566.1 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 MP2/TZVP
ABC
1.10963 0.29034 0.23013

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 0.000 1.235
O2 0.000 0.689 -0.849
O3 0.000 -0.689 -0.849

Atom - Atom Distances (Å)
  Na1 O2 O3
Na12.19442.1944
O22.19441.3783
O32.19441.3783

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 71.697 Na1 O3 O2 71.697
O2 Na1 O3 36.606
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability