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All results from a given calculation for CO2 (Carbon dioxide)

using model chemistry: CISD/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at CISD/CEP-31G*
 hartrees
Energy at 0K-37.328726
Energy at 298.15K-37.328809
HF Energy-36.915345
Nuclear repulsion energy29.717222
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 CISD/CEP-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 1421 1310 0.00      
2 Σu 2484 2290 871.73      
3 Πu 683 629 38.72      
3 Πu 683 629 38.72      

Unscaled Zero Point Vibrational Energy (zpe) 2635.2 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 2429.2 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 CISD/CEP-31G*
B
0.38151

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/CEP-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
O2 0.000 0.000 1.175
O3 0.000 0.000 -1.175

Atom - Atom Distances (Å)
  C1 O2 O3
C11.17531.1753
O21.17532.3505
O31.17532.3505

picture of Carbon dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability