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

using model chemistry: mPW1PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at mPW1PW91/STO-3G
 hartrees
Energy at 0K-151.155159
Energy at 298.15K-151.157312
HF Energy-151.155159
Nuclear repulsion energy61.299817
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 mPW1PW91/STO-3G
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' 3514 3089 0.91      
2 A' 3335 2931 1.73      
3 A' 1956 1719 15.44      
4 A' 1659 1458 12.21      
5 A' 1518 1334 4.08      
6 A' 1125 989 10.79      
7 A' 921 809 3.74      
8 A' 459 403 3.35      
9 A" 3517 3091 1.26      
10 A" 1655 1455 7.26      
11 A" 1032 907 1.32      
12 A" 94 83 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 10393.3 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 9134.6 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 mPW1PW91/STO-3G
ABC
2.57883 0.31857 0.29960

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.003 -0.654 0.000
C2 0.000 0.532 0.000
O3 1.226 0.439 0.000
H4 -0.496 -1.631 0.000
H5 -1.645 -0.574 0.889
H6 -1.645 -0.574 -0.889

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.55342.48251.10051.09941.0994
C21.55341.22942.21892.17282.1728
O32.48251.22942.69223.17173.1717
H41.10052.21892.69221.79621.7962
H51.09942.17283.17171.79621.7779
H61.09942.17283.17171.79621.7779

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 125.880 C2 C1 H4 112.331
C2 C1 H5 108.775 C2 C1 H6 108.775
H4 C1 H5 109.467 H4 C1 H6 109.467
H5 C1 H6 107.921
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.256      
2 C 0.097      
3 O -0.139      
4 H 0.095      
5 H 0.102      
6 H 0.102      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.227 -0.976 0.000 1.568
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.141 0.029 0.000
y 0.029 -16.627 0.000
z 0.000 0.000 -15.395
Traceless
 xyz
x -1.130 0.029 0.000
y 0.029 -0.359 0.000
z 0.000 0.000 1.489
Polar
3z2-r22.978
x2-y2-0.514
xy0.029
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.478 0.257 0.000
y 0.257 1.476 0.000
z 0.000 0.000 1.261


<r2> (average value of r2) Å2
<r2> 44.660
(<r2>)1/2 6.683