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

using model chemistry: PBEPBE/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 PBEPBE/STO-3G
 hartrees
Energy at 0K-151.002124
Energy at 298.15K-151.004228
HF Energy-151.002124
Nuclear repulsion energy60.640555
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 PBEPBE/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' 3393 3100 1.43      
2 A' 3219 2941 1.37      
3 A' 1827 1669 11.25      
4 A' 1607 1468 12.74      
5 A' 1455 1329 4.30      
6 A' 1078 984 11.12      
7 A' 864 790 5.74      
8 A' 440 402 2.65      
9 A" 3398 3104 0.54      
10 A" 1601 1463 6.96      
11 A" 988 903 1.55      
12 A" 100 92 1.86      

Unscaled Zero Point Vibrational Energy (zpe) 9985.3 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 9122.5 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 PBEPBE/STO-3G
ABC
2.47954 0.31385 0.29430

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.017 -0.649 0.000
C2 0.000 0.545 0.000
O3 1.243 0.424 0.000
H4 -0.515 -1.638 0.000
H5 -1.664 -0.563 0.895
H6 -1.664 -0.563 -0.895

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.56822.50111.10951.10821.1082
C21.56821.24872.24332.19072.1907
O32.50111.24872.70943.19783.1978
H41.10952.24332.70941.81081.8108
H51.10822.19073.19781.81081.7905
H61.10822.19073.19781.81081.7905

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 124.834 C2 C1 H4 112.686
C2 C1 H5 108.653 C2 C1 H6 108.653
H4 C1 H5 109.479 H4 C1 H6 109.479
H5 C1 H6 107.765
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.255      
2 C 0.072      
3 O -0.112      
4 H 0.093      
5 H 0.101      
6 H 0.101      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.079 -0.972 0.000 1.453
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.869 0.134 0.000
y 0.134 -16.644 0.000
z 0.000 0.000 -15.424
Traceless
 xyz
x -0.835 0.134 0.000
y 0.134 -0.498 0.000
z 0.000 0.000 1.333
Polar
3z2-r22.666
x2-y2-0.225
xy0.134
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.548 0.304 0.000
y 0.304 1.522 0.000
z 0.000 0.000 1.276


<r2> (average value of r2) Å2
<r2> 45.218
(<r2>)1/2 6.724