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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-153.119202
Energy at 298.15K-153.121460
HF Energy-153.119202
Nuclear repulsion energy62.787944
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
(Å4/u)
Dep P Dep U
1 A' 3149 3013 8.79      
2 A' 3052 2920 6.10      
3 A' 1956 1872 129.41      
4 A' 1482 1417 20.93      
5 A' 1377 1317 15.08      
6 A' 1061 1015 16.18      
7 A' 873 835 4.61      
8 A' 464 444 5.36      
9 A" 3153 3017 1.95      
10 A" 1478 1414 13.18      
11 A" 958 916 0.32      
12 A" 110 105 1.32      

Unscaled Zero Point Vibrational Energy (zpe) 9555.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9142.0 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
2.78723 0.33152 0.31351

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 -0.970 -0.657 0.000
C2 0.000 0.500 0.000
O3 1.187 0.465 0.000
H4 -0.448 -1.622 0.000
H5 -1.616 -0.576 0.881
H6 -1.616 -0.576 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51002.43151.09661.09511.0951
C21.51001.18782.16902.13142.1314
O32.43151.18782.65153.11673.1167
H41.09662.16902.65151.79791.7979
H51.09512.13143.11671.79791.7612
H61.09512.13143.11671.79791.7612

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 128.260 C2 C1 H4 111.654
C2 C1 H5 108.760 C2 C1 H6 108.760
H4 C1 H5 110.238 H4 C1 H6 110.238
H5 C1 H6 107.060
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 -0.603      
2 C 0.285      
3 O -0.316      
4 H 0.205      
5 H 0.214      
6 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.108 -1.292 0.000 2.473
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.559 -0.146 0.000
y -0.146 -18.177 0.000
z 0.000 0.000 -16.611
Traceless
 xyz
x -1.165 -0.146 0.000
y -0.146 -0.592 0.000
z 0.000 0.000 1.757
Polar
3z2-r23.514
x2-y2-0.382
xy-0.146
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.188 0.419 0.000
y 0.419 3.179 0.000
z 0.000 0.000 2.616


<r2> (average value of r2) Å2
<r2> 44.113
(<r2>)1/2 6.642