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All results from a given calculation for CH2CO (Ketene)

using model chemistry: CISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/cc-pVTZ
 hartrees
Energy at 0K-152.274448
Energy at 298.15K-152.275613
HF Energy-151.785633
Nuclear repulsion energy59.016682
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/cc-pVTZ
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 3292 3061 29.98      
2 A1 2296 2135 750.00      
3 A1 1480 1376 15.40      
4 A1 1210 1125 3.65      
5 B1 642 597 92.22      
6 B1 591 549 45.20      
7 B2 3398 3159 8.26      
8 B2 1038 965 5.10      
9 B2 462 430 4.71      

Unscaled Zero Point Vibrational Energy (zpe) 7204.0 cm-1
Scaled (by 0.9298) Zero Point Vibrational Energy (zpe) 6698.3 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/cc-pVTZ
ABC
9.55058 0.34856 0.33629

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.203
C2 0.000 0.000 0.104
O3 0.000 0.000 1.255
H4 0.000 0.936 -1.722
H5 0.000 -0.936 -1.722

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.30672.45731.07021.0702
C21.30671.15062.05192.0519
O32.45731.15063.12033.1203
H41.07022.05193.12031.8716
H51.07022.05193.12031.8716

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 119.030
C2 C1 H5 119.030 H4 C1 H5 121.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability