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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-152.995271
Energy at 298.15K-152.997500
HF Energy-152.995271
Nuclear repulsion energy62.346091
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 PBEPBEultrafine/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' 3067 3017 9.77      
2 A' 2970 2921 8.78      
3 A' 1872 1841 109.40      
4 A' 1438 1414 21.36      
5 A' 1328 1306 14.71      
6 A' 1025 1008 15.59      
7 A' 847 833 5.78      
8 A' 448 441 4.42      
9 A" 3075 3024 1.57      
10 A" 1432 1409 12.44      
11 A" 924 909 0.40      
12 A" 117 115 2.04      

Unscaled Zero Point Vibrational Energy (zpe) 9270.9 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 9118.0 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 PBEPBEultrafine/6-31G*
ABC
2.73047 0.32810 0.30992

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.978 -0.653 0.000
C2 0.000 0.505 0.000
O3 1.199 0.456 0.000
H4 -0.463 -1.631 0.000
H5 -1.631 -0.565 0.885
H6 -1.631 -0.565 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51532.44361.10541.10321.1032
C21.51531.20022.18512.14192.1419
O32.44361.20022.66833.13623.1362
H41.10542.18512.66831.81161.8116
H51.10322.14193.13621.81161.7707
H61.10322.14193.13621.81161.7707

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 127.903 C2 C1 H4 112.027
C2 C1 H5 108.743 C2 C1 H6 108.743
H4 C1 H5 110.214 H4 C1 H6 110.214
H5 C1 H6 106.738
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.571      
2 C 0.255      
3 O -0.283      
4 H 0.191      
5 H 0.205      
6 H 0.205      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.979 -1.266 0.000 2.349
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.412 -0.062 -0.005
y -0.062 -18.294 0.002
z -0.005 0.002 -16.700
Traceless
 xyz
x -0.916 -0.062 -0.005
y -0.062 -0.738 0.002
z -0.005 0.002 1.653
Polar
3z2-r23.307
x2-y2-0.118
xy-0.062
xz-0.005
yz0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.324 0.485 0.001
y 0.485 3.311 -0.001
z 0.001 -0.001 2.658


<r2> (average value of r2) Å2
<r2> 44.514
(<r2>)1/2 6.672