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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-152.363885
Energy at 298.15K-152.366243
HF Energy-152.363885
Nuclear repulsion energy63.634104
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 HF/Def2TZVPP
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' 3259 2954 11.62      
2 A' 3173 2876 6.83      
3 A' 2116 1918 256.57      
4 A' 1576 1428 19.27      
5 A' 1489 1350 7.76      
6 A' 1152 1044 17.75      
7 A' 911 826 2.21      
8 A' 511 463 8.92      
9 A" 3258 2953 6.45      
10 A" 1579 1431 10.85      
11 A" 1039 942 0.09      
12 A" 112 102 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10087.3 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 9143.1 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 HF/Def2TZVPP
ABC
2.94831 0.33519 0.31851

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.949 -0.685 0.000
C2 0.000 0.488 0.000
O3 1.156 0.505 0.000
H4 -0.397 -1.616 0.000
H5 -1.581 -0.619 0.875
H6 -1.581 -0.619 -0.875

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50812.41771.08221.08161.0816
C21.50811.15642.14082.11912.1191
O32.41771.15642.62863.08583.0858
H41.08222.14082.62861.77801.7780
H51.08162.11913.08581.77801.7497
H61.08162.11913.08581.77801.7497

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 129.813 C2 C1 H4 110.388
C2 C1 H5 108.703 C2 C1 H6 108.703
H4 C1 H5 110.508 H4 C1 H6 110.508
H5 C1 H6 107.963
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.110      
2 C 0.175      
3 O -0.308      
4 H 0.084      
5 H 0.080      
6 H 0.080      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.473 -1.437 0.000 2.860
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.541 -0.336 0.000
y -0.336 -18.578 0.000
z 0.000 0.000 -16.973
Traceless
 xyz
x -1.766 -0.336 0.000
y -0.336 -0.320 0.000
z 0.000 0.000 2.086
Polar
3z2-r24.172
x2-y2-0.964
xy-0.336
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.445 0.303 0.000
y 0.303 3.683 0.000
z 0.000 0.000 3.081


<r2> (average value of r2) Å2
<r2> 43.948
(<r2>)1/2 6.629