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

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-153.175188
Energy at 298.15K-153.177461
HF Energy-153.175188
Nuclear repulsion energy63.162322
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 mPW1PW91/6-311G*
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' 3148 3005 11.24      
2 A' 3051 2911 10.26      
3 A' 1973 1883 160.61      
4 A' 1478 1410 25.09      
5 A' 1371 1309 19.65      
6 A' 1063 1015 14.94      
7 A' 879 839 4.00      
8 A' 471 449 5.21      
9 A" 3154 3010 2.80      
10 A" 1471 1404 16.22      
11 A" 961 917 0.04      
12 A" 109 104 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 9564.6 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 9128.4 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 mPW1PW91/6-311G*
ABC
2.84119 0.33443 0.31664

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.961 -0.662 0.000
C2 0.000 0.494 0.000
O3 1.176 0.474 0.000
H4 -0.434 -1.620 0.000
H5 -1.605 -0.584 0.877
H6 -1.605 -0.584 -0.877

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50332.42051.09331.09111.0911
C21.50331.17662.15812.12372.1237
O32.42051.17662.64163.10303.1030
H41.09332.15812.64161.79261.7926
H51.09112.12373.10301.79261.7542
H61.09112.12373.10301.79261.7542

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 128.756 C2 C1 H4 111.450
C2 C1 H5 108.843 C2 C1 H6 108.843
H4 C1 H5 110.294 H4 C1 H6 110.294
H5 C1 H6 106.996
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.726      
2 C 0.192      
3 O -0.223      
4 H 0.242      
5 H 0.257      
6 H 0.257      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.077 -1.336 0.000 2.470
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.867 -0.165 0.000
y -0.165 -18.628 0.000
z 0.000 0.000 -16.862
Traceless
 xyz
x -1.121 -0.165 0.000
y -0.165 -0.764 0.000
z 0.000 0.000 1.885
Polar
3z2-r23.771
x2-y2-0.238
xy-0.165
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.360 0.434 0.000
y 0.434 3.524 0.000
z 0.000 0.000 2.786


<r2> (average value of r2) Å2
<r2> 44.010
(<r2>)1/2 6.634