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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-152.302950
Energy at 298.15K-152.305281
HF Energy-152.302950
Nuclear repulsion energy63.382924
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/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' 3287 2967 11.77      
2 A' 3194 2883 5.82      
3 A' 2141 1932 225.60      
4 A' 1586 1431 16.66      
5 A' 1501 1355 8.57      
6 A' 1153 1041 17.47      
7 A' 923 833 1.85      
8 A' 509 459 9.19      
9 A" 3282 2962 7.95      
10 A" 1589 1435 10.66      
11 A" 1040 939 0.00      
12 A" 98 88 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10151.4 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 9162.7 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/6-31G**
ABC
2.89537 0.33404 0.31689

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.955 -0.679 0.000
C2 0.000 0.493 0.000
O3 1.165 0.495 0.000
H4 -0.408 -1.615 0.000
H5 -1.590 -0.615 0.876
H6 -1.590 -0.615 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51192.42331.08411.08371.0837
C21.51191.16472.14752.12672.1267
O32.42331.16472.63253.09663.0966
H41.08412.14752.63251.77891.7789
H51.08372.12673.09661.77891.7514
H61.08372.12673.09661.77891.7514

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 129.291 C2 C1 H4 110.549
C2 C1 H5 108.920 C2 C1 H6 108.920
H4 C1 H5 110.290 H4 C1 H6 110.290
H5 C1 H6 107.808
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.432      
2 C 0.367      
3 O -0.412      
4 H 0.160      
5 H 0.158      
6 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.529 -1.272 0.000 2.831
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.487 -0.499 0.000
y -0.499 -18.257 0.000
z 0.000 0.000 -16.789
Traceless
 xyz
x -1.964 -0.499 0.000
y -0.499 -0.119 0.000
z 0.000 0.000 2.083
Polar
3z2-r24.166
x2-y2-1.230
xy-0.499
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.952 0.311 0.000
y 0.311 2.994 0.000
z 0.000 0.000 2.561


<r2> (average value of r2) Å2
<r2> 43.990
(<r2>)1/2 6.632