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

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-152.759686
Energy at 298.15K-152.761914
HF Energy-152.300778
Nuclear repulsion energy62.577177
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 QCISD/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' 885 833 3.25      
2 A' 470 443 5.59      
3 A" 3215 3027 5.38      
4 A" 1521 1432 8.44      
5 A" 982 924 0.03      
6 A" 78 73 0.36      
7 A' 3213 3025 10.08      
8 A' 3111 2929 5.79      
9 A' 1908 1796 92.42      
10 A' 1520 1430 14.20      
11 A' 1414 1331 6.73      
12 A' 1082 1018 14.91      

Unscaled Zero Point Vibrational Energy (zpe) 9698.7 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 9130.4 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 QCISD/6-31G**
ABC
2.74414 0.32992 0.31153

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.980 -0.653 0.000
C2 0.000 0.508 0.000
O3 1.195 0.453 0.000
H4 -0.448 -1.605 0.000
H5 -1.616 -0.575 0.881
H6 -1.616 -0.575 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51972.44001.09041.08921.0892
C21.51971.19632.16032.13552.1355
O32.44001.19632.63333.11993.1199
H41.09042.16032.63331.78921.7892
H51.08922.13553.11991.78921.7612
H61.08922.13553.11991.78921.7612

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 127.491 C2 C1 H4 110.647
C2 C1 H5 108.759 C2 C1 H6 108.759
H4 C1 H5 110.352 H4 C1 H6 110.352
H5 C1 H6 107.902
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability