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All results from a given calculation for CH2CO (Ketene)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-152.163686
Energy at 298.15K-152.164748
HF Energy-151.721866
Nuclear repulsion energy58.040673
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3236 3081 21.16      
2 A1 2222 2116 489.04      
3 A1 1457 1388 12.36      
4 A1 1178 1122 8.47      
5 B1 615 585 95.94      
6 B1 522 497 54.56      
7 B2 3335 3176 3.64      
8 B2 1026 977 6.76      
9 B2 441 420 3.83      

Unscaled Zero Point Vibrational Energy (zpe) 7015.5 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 6680.9 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 QCISD/6-31G*
ABC
9.44856 0.33713 0.32551

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/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 0.100
O3 0.000 0.000 1.278
H4 0.000 0.941 -1.755
H5 0.000 -0.941 -1.755

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.31942.49731.08261.0826
C21.31941.17792.07992.0799
O32.49731.17793.17553.1755
H41.08262.07993.17551.8816
H51.08262.07993.17551.8816

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 119.653
C2 C1 H5 119.653 H4 C1 H5 120.695
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability