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

using model chemistry: ROHF/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 ROHF/6-31G**
 hartrees
Energy at 0K-152.298601
Energy at 298.15K-152.300954
HF Energy-152.298601
Nuclear repulsion energy63.412060
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 ROHF/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' 938 801 1.12      
2 A' 512 437 9.56      
3 A" 3283 2806 7.69      
4 A" 1589 1358 10.88      
5 A" 1040 889 0.00      
6 A" 107 91 0.01      
7 A' 3291 2813 10.46      
8 A' 3197 2732 4.93      
9 A' 2153 1840 240.64      
10 A' 1586 1355 16.58      
11 A' 1504 1285 9.09      
12 A' 1166 996 16.71      

Unscaled Zero Point Vibrational Energy (zpe) 10181.9 cm-1
Scaled (by 0.8546) Zero Point Vibrational Energy (zpe) 8701.4 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 ROHF/6-31G**
ABC
2.91706 0.33382 0.31696

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.955 -0.680 0.000
C2 0.000 0.490 0.000
O3 1.164 0.499 0.000
H4 -0.405 -1.614 0.000
H5 -1.590 -0.616 0.876
H6 -1.590 -0.616 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50962.42451.08391.08361.0836
C21.50961.16422.14232.12532.1253
O32.42451.16422.63183.09743.0974
H41.08392.14232.63181.77921.7792
H51.08362.12533.09741.77921.7517
H61.08362.12533.09741.77921.7517

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 129.674 C2 C1 H4 110.305
C2 C1 H5 108.976 C2 C1 H6 108.976
H4 C1 H5 110.338 H4 C1 H6 110.338
H5 C1 H6 107.850
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.431      
2 C 0.375      
3 O -0.422      
4 H 0.161      
5 H 0.159      
6 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.584 -1.265 0.000 2.877
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.544 -0.526 -0.000
y -0.526 -18.227 -0.000
z -0.000 -0.000 -16.783
Traceless
 xyz
x -2.039 -0.526 -0.000
y -0.526 -0.063 -0.000
z -0.000 -0.000 2.102
Polar
3z2-r24.205
x2-y2-1.317
xy-0.526
xz-0.000
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 43.987
(<r2>)1/2 6.632