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All results from a given calculation for CH2CO (Ketene)

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G3
 hartrees
Energy at 0K-152.506870
Energy at 298.15K-152.502428
HF Energy-151.724672
Nuclear repulsion energy59.158363
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 HF/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 3377 3181 23.26 92.60 0.13 0.24
2 A1 2378 2240 917.38 1.02 0.54 0.70
3 A1 1567 1476 15.01 2.71 0.43 0.60
4 A1 1266 1193 4.64 32.77 0.30 0.46
5 B1 723 681 159.85 1.36 0.75 0.86
6 B1 622 586 32.73 5.61 0.75 0.86
7 B2 3478 3277 3.66 53.28 0.75 0.86
8 B2 1113 1048 11.22 0.03 0.75 0.86
9 B2 492 463 9.80 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7506.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 7072.9 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 MP2=FULL/6-31G*
ABC
9.48340 0.33699 0.32543

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.219
C2 0.000 0.000 0.099
O3 0.000 0.000 1.279
H4 0.000 0.939 -1.753
H5 0.000 -0.939 -1.753

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.31822.49821.08011.0801
C21.31821.18002.07632.0763
O32.49821.18003.17393.1739
H41.08012.07633.17391.8782
H51.08012.07633.17391.8782

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 119.301
C2 C1 H5 119.301 H4 C1 H5 121.398
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability