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: B2PLYP=FULL/3-21G

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 B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-187.327512
Energy at 298.15K-187.327466
HF Energy-187.199491
Nuclear repulsion energy56.953637
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 B2PLYP=FULL/3-21G
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 1253 1193 0.00 15.26 0.23 0.37
2 Σu 2312 2201 288.16 0.00 0.00 0.00
3 Πu 569 542 18.97 0.00 0.00 0.00
3 Πu 569 542 18.97 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 2351.9 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 2239.0 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 B2PLYP=FULL/3-21G
B
0.37257

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

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 1.189
O3 0.000 0.000 -1.189

Atom - Atom Distances (Å)
  C1 O2 O3
C11.18931.1893
O21.18932.3786
O31.18932.3786

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