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

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-153.068547
Energy at 298.15K-153.070839
HF Energy-153.068547
Nuclear repulsion energy62.295165
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 B3PW91/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3149 3016 9.51      
2 A' 3047 2918 6.29      
3 A' 1849 1771 113.57      
4 A' 1500 1437 28.24      
5 A' 1417 1357 27.00      
6 A' 1087 1041 17.73      
7 A' 895 857 3.18      
8 A' 462 443 5.37      
9 A" 3155 3022 1.46      
10 A" 1497 1434 19.78      
11 A" 992 950 0.86      
12 A" 116 111 1.96      

Unscaled Zero Point Vibrational Energy (zpe) 9583.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 9177.6 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 B3PW91/6-31G
ABC
2.83590 0.32472 0.30799

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.987 -0.645 0.000
C2 0.000 0.488 0.000
O3 1.210 0.459 0.000
H4 -0.494 -1.624 0.000
H5 -1.632 -0.554 0.880
H6 -1.632 -0.554 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50232.45911.09661.09501.0950
C21.50231.21052.16882.12682.1268
O32.45911.21052.69163.14323.1432
H41.09662.16882.69161.79341.7934
H51.09502.12683.14321.79341.7606
H61.09502.12683.14321.79341.7606

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 129.741 C2 C1 H4 112.186
C2 C1 H5 108.931 C2 C1 H6 108.931
H4 C1 H5 109.820 H4 C1 H6 109.820
H5 C1 H6 107.009
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.588      
2 C 0.301      
3 O -0.343      
4 H 0.201      
5 H 0.215      
6 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.482 -1.485 0.000 2.892
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.249 -0.208 0.000
y -0.208 -18.450 0.000
z 0.000 0.000 -16.708
Traceless
 xyz
x -1.670 -0.208 0.000
y -0.208 -0.471 0.000
z 0.000 0.000 2.141
Polar
3z2-r24.282
x2-y2-0.799
xy-0.208
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.266 0.402 0.000
y 0.402 3.016 0.000
z 0.000 0.000 2.505


<r2> (average value of r2) Å2
<r2> 44.872
(<r2>)1/2 6.699