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All results from a given calculation for CH2CO (Ketene)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-151.759171
Energy at 298.15K-151.760391
HF Energy-151.759171
Nuclear repulsion energy58.041880
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 B3LYP/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 3200 3088 25.93 85.82 0.12 0.21
2 A1 2205 2128 389.45 1.00 0.56 0.72
3 A1 1463 1412 26.74 6.26 0.73 0.84
4 A1 1186 1145 7.02 24.73 0.32 0.48
5 B1 724 698 200.84 0.89 0.75 0.86
6 B1 596 575 0.59 3.08 0.75 0.86
7 B2 3281 3166 6.18 58.63 0.75 0.86
8 B2 1050 1013 10.79 0.04 0.75 0.86
9 B2 489 472 0.79 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7096.5 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 6847.4 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 B3LYP/3-21G
ABC
9.61547 0.33745 0.32601

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.214
C2 0.000 0.000 0.094
O3 0.000 0.000 1.280
H4 0.000 0.933 -1.762
H5 0.000 -0.933 -1.762

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.30752.49371.08191.0819
C21.30751.18622.07702.0770
O32.49371.18623.18173.1817
H41.08192.07703.18171.8652
H51.08192.07703.18171.8652

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 120.453
C2 C1 H5 120.453 H4 C1 H5 119.094
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.478      
2 C 0.418      
3 O -0.433      
4 H 0.247      
5 H 0.247      


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 -1.501 1.501
CHELPG        
AIM        
ESP 0.000 0.000 -1.519 1.519


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.554 0.000 0.000
y 0.000 -15.040 0.000
z 0.000 0.000 -17.968
Traceless
 xyz
x -2.050 0.000 0.000
y 0.000 3.221 0.000
z 0.000 0.000 -1.171
Polar
3z2-r2-2.341
x2-y2-3.514
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.997 0.000 0.000
y 0.000 1.982 0.000
z 0.000 0.000 5.053


<r2> (average value of r2) Å2
<r2> 40.682
(<r2>)1/2 6.378