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All results from a given calculation for CH3CO (Acetyl radical)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-153.158413
Energy at 298.15K-153.160678
HF Energy-153.158413
Nuclear repulsion energy63.041746
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 B3PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3127 3011 11.62      
2 A' 3030 2917 11.12      
3 A' 1952 1879 155.17      
4 A' 1470 1415 25.10      
5 A' 1363 1312 19.58      
6 A' 1055 1016 14.79      
7 A' 868 836 4.57      
8 A' 468 450 5.04      
9 A" 3133 3016 2.84      
10 A" 1463 1408 16.12      
11 A" 955 920 0.06      
12 A" 109 105 1.46      

Unscaled Zero Point Vibrational Energy (zpe) 9496.6 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 9142.4 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 B3PW91/6-311G*
ABC
2.82799 0.33326 0.31547

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.963 -0.662 0.000
C2 0.000 0.496 0.000
O3 1.179 0.474 0.000
H4 -0.437 -1.623 0.000
H5 -1.609 -0.584 0.878
H6 -1.609 -0.584 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50612.42481.09501.09281.0928
C21.50611.17922.16302.12722.1272
O32.42481.17922.64713.10833.1083
H41.09502.16302.64711.79521.7952
H51.09282.12723.10831.79521.7565
H61.09282.12723.10831.79521.7565

picture of Acetyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 128.692 C2 C1 H4 111.539
C2 C1 H5 108.824 C2 C1 H6 108.824
H4 C1 H5 110.280 H4 C1 H6 110.280
H5 C1 H6 106.966
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.721      
2 C 0.187      
3 O -0.218      
4 H 0.241      
5 H 0.256      
6 H 0.256      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.059 -1.341 0.000 2.457
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.856 -0.150 0.000
y -0.150 -18.651 0.000
z 0.000 0.000 -16.875
Traceless
 xyz
x -1.093 -0.150 0.000
y -0.150 -0.786 0.000
z 0.000 0.000 1.879
Polar
3z2-r23.757
x2-y2-0.205
xy-0.150
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.393 0.453 0.000
y 0.453 3.567 0.000
z 0.000 0.000 2.801


<r2> (average value of r2) Å2
<r2> 44.135
(<r2>)1/2 6.643