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All results from a given calculation for CH2CO (Ketene)

using model chemistry: LSDA/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/3-21G*
 hartrees
Energy at 0K-150.943623
Energy at 298.15K-150.944800
Nuclear repulsion energy58.006764
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 LSDA/3-21G*
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 3136 3079 44.09      
2 A1 2224 2184 333.29      
3 A1 1396 1371 34.49      
4 A1 1177 1156 11.19      
5 B1 698 686 212.24      
6 B1 588 577 4.42      
7 B2 3216 3158 16.78      
8 B2 993 975 15.67      
9 B2 478 469 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 6952.8 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 6827.7 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 LSDA/3-21G*
ABC
9.49857 0.33774 0.32614

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.210
C2 0.000 0.000 0.093
O3 0.000 0.000 1.280
H4 0.000 0.938 -1.768
H5 0.000 -0.938 -1.768

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.30332.49081.09161.0916
C21.30331.18742.08422.0842
O32.49081.18743.18963.1896
H41.09162.08423.18961.8767
H51.09162.08423.18961.8767

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 120.725
C2 C1 H5 120.725 H4 C1 H5 118.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.528      
2 C 0.372      
3 O -0.382      
4 H 0.269      
5 H 0.269      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.496 1.496
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.641 0.000 0.000
y 0.000 -14.945 0.000
z 0.000 0.000 -17.449
Traceless
 xyz
x -2.444 0.000 0.000
y 0.000 3.100 0.000
z 0.000 0.000 -0.655
Polar
3z2-r2-1.311
x2-y2-3.696
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.019 0.000 0.000
y 0.000 2.028 0.000
z 0.000 0.000 5.074


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000