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All results from a given calculation for CH2CO (Ketene)

using model chemistry: CISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-152.179777
Energy at 298.15K-152.180929
HF Energy-151.762481
Nuclear repulsion energy58.800778
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/6-311G*
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 3270 3026 24.67      
2 A1 2299 2128 698.08      
3 A1 1479 1368 18.21      
4 A1 1207 1117 5.77      
5 B1 626 580 66.89      
6 B1 585 541 100.23      
7 B2 3375 3123 4.79      
8 B2 1055 976 8.79      
9 B2 469 434 3.95      

Unscaled Zero Point Vibrational Energy (zpe) 7182.5 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 6646.0 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 CISD/6-311G*
ABC
9.52447 0.34586 0.33374

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.206
C2 0.000 0.000 0.106
O3 0.000 0.000 1.259
H4 0.000 0.937 -1.736
H5 0.000 -0.937 -1.736

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.31182.46521.07641.0764
C21.31181.15342.06622.0662
O32.46521.15343.13813.1381
H41.07642.06623.13811.8741
H51.07642.06623.13811.8741

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 119.478
C2 C1 H5 119.478 H4 C1 H5 121.045
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability