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All results from a given calculation for CH2CO (Ketene)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-152.375213
Energy at 298.15K-152.370799
HF Energy-151.725493
Nuclear repulsion energy59.217455
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 A1 3363 3363 24.08 91.31 0.13 0.23
2 A1 2381 2381 952.49 1.07 0.67 0.81
3 A1 1554 1554 13.68 2.59 0.37 0.54
4 A1 1264 1264 5.87 32.22 0.30 0.46
5 B1 689 689 122.29 0.65 0.75 0.86
6 B1 632 632 53.53 5.71 0.75 0.86
7 B2 3466 3466 3.67 52.62 0.75 0.86
8 B2 1102 1102 10.30 0.02 0.75 0.86
9 B2 492 492 9.77 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7471.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7471.8 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
ABC
9.40615 0.33686 0.32521

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.199
C2 0.000 0.000 0.109
O3 0.000 0.000 1.249
H4 0.000 0.936 -1.725
H5 0.000 -0.936 -1.725

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.30812.44821.07331.0733
C21.30811.14012.05862.0586
O32.44821.14013.11753.1175
H41.07332.05863.11751.8716
H51.07332.05863.11751.8716

picture of Ketene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 180.000 C2 C1 H4 119.315
C2 C1 H5 119.315 H4 C1 H5 121.370
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability