return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CO2 (Carbon dioxide)

using model chemistry: CCD/TZVP

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 CCD/TZVP
 hartrees
Energy at 0K-188.199910
Energy at 298.15K-188.200015
HF Energy-187.700113
Nuclear repulsion energy58.562754
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 CCD/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 Σg 1417 1344 0.00      
2 Σu 2467 2339 832.75      
3 Πu 698 662 40.68      
3 Πu 698 662 40.68      

Unscaled Zero Point Vibrational Energy (zpe) 2640.1 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 2502.8 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 CCD/TZVP
B
0.39392

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

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 1.157
O3 0.000 0.000 -1.157

Atom - Atom Distances (Å)
  C1 O2 O3
C11.15661.1566
O21.15662.3132
O31.15662.3132

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