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All results from a given calculation for CO (Carbon monoxide)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
2 1 yes C*V 3Π

State 1 (1Σ)

Jump to S2C1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-113.181486
Energy at 298.15K-113.178181
HF Energy-112.739131
Nuclear repulsion energy22.892881
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2440 2440 145.71      

Unscaled Zero Point Vibrational Energy (zpe) 1219.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1219.9 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 CBS-Q
B
1.87648

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.634
O2 0.000 0.000 0.476

Atom - Atom Distances (Å)
  C1 O2
C11.1095
O21.1095

picture of Carbon monoxide state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

State 2 (3Π)

Jump to S1C1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-112.959001
Energy at 298.15K-112.955693
HF Energy-112.548052
Nuclear repulsion energy21.330080
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 1748 1748 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 873.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 873.8 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 CBS-Q
B
1.78660

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.681
O2 0.000 0.000 0.511

Atom - Atom Distances (Å)
  C1 O2
C11.1917
O21.1917

picture of Carbon monoxide state 2 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability