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

using model chemistry: CCD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-152.761058
Energy at 298.15K-152.763297
HF Energy-152.307525
Nuclear repulsion energy62.815913
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 CCD/6-31+G**
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' 894 843 2.74      
2 A' 478 451 6.55      
3 A" 3224 3038 2.37      
4 A" 1510 1423 12.17      
5 A" 989 932 0.62      
6 A" 77 72 0.47      
7 A' 3217 3031 7.32      
8 A' 3112 2933 5.80      
9 A' 2005 1889 170.18      
10 A' 1511 1424 18.70      
11 A' 1417 1335 10.01      
12 A' 1084 1022 19.03      

Unscaled Zero Point Vibrational Energy (zpe) 9758.5 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 9195.4 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 CCD/6-31+G**
ABC
2.79374 0.33105 0.31318

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.973 -0.661 0.000
C2 0.000 0.501 0.000
O3 1.186 0.467 0.000
H4 -0.439 -1.613 0.000
H5 -1.607 -0.580 0.881
H6 -1.607 -0.580 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51562.43601.09081.08881.0888
C21.51561.18672.15852.12782.1278
O32.43601.18672.63903.11063.1106
H41.09082.15852.63901.79121.7912
H51.08882.12783.11061.79121.7618
H61.08882.12783.11061.79121.7618

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 128.280 C2 C1 H4 110.762
C2 C1 H5 108.458 C2 C1 H6 108.458
H4 C1 H5 110.533 H4 C1 H6 110.533
H5 C1 H6 108.011
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability