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All results from a given calculation for CH2CO (Ketene)

using model chemistry: QCISD(T)/Def2TZVPP

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(T)/Def2TZVPP
 hartrees
Energy at 0K-152.363926
Energy at 298.15K-152.364958
HF Energy-151.789962
Nuclear repulsion energy58.348710
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(T)/Def2TZVPP
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 3201 3201        
2 A1 2186 2186        
3 A1 1421 1421        
4 A1 1151 1151        
5 B1 585 585        
6 B1 509 509        
7 B2 3308 3308        
8 B2 994 994        
9 B2 434 434        

Unscaled Zero Point Vibrational Energy (zpe) 6894.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6894.6 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(T)/Def2TZVPP
ABC
9.43073 0.34057 0.32870

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.216
C2 0.000 0.000 0.103
O3 0.000 0.000 1.270
H4 0.000 0.942 -1.741
H5 0.000 -0.942 -1.741

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.31952.48621.07781.0778
C21.31951.16672.07032.0703
O32.48621.16673.15433.1543
H41.07782.07033.15431.8834
H51.07782.07033.15431.8834

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 119.105
C2 C1 H5 119.105 H4 C1 H5 121.790
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability