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All results from a given calculation for CH2CO (Ketene)

using model chemistry: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-152.155273
Energy at 298.15K-152.156356
HF Energy-151.722717
Nuclear repulsion energy58.226558
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/6-31G*
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 3245 3071 22.91      
2 A1 2272 2151 540.84      
3 A1 1466 1387 11.53      
4 A1 1196 1132 8.87      
5 B1 623 590 100.23      
6 B1 533 505 52.74      
7 B2 3344 3165 4.13      
8 B2 1032 977 6.74      
9 B2 446 422 3.89      

Unscaled Zero Point Vibrational Energy (zpe) 7078.7 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 6700.0 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 CCD/6-31G*
ABC
9.45903 0.33934 0.32759

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.215
C2 0.000 0.000 0.101
O3 0.000 0.000 1.273
H4 0.000 0.940 -1.751
H5 0.000 -0.940 -1.751

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.31682.48881.08211.0821
C21.31681.17192.07742.0774
O32.48881.17193.16713.1671
H41.08212.07743.16711.8806
H51.08212.07743.16711.8806

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 119.663
C2 C1 H5 119.663 H4 C1 H5 120.674
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability