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

using model chemistry: CCSD/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 CCSD/6-31G**
 hartrees
Energy at 0K-152.756773
Energy at 298.15K-152.759008
HF Energy-152.301265
Nuclear repulsion energy62.677636
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 CCSD/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' 3217 3000        
2 A' 3115 2905        
3 A' 1958 1826        
4 A' 1521 1418        
5 A' 1415 1320        
6 A' 1081 1008        
7 A' 888 828        
8 A' 473 441        
9 A" 3218 3001        
10 A" 1521 1419        
11 A" 984 918        
12 A" 80 75        

Unscaled Zero Point Vibrational Energy (zpe) 9735.6 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 9079.4 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 CCSD/6-31G**
ABC
2.75732 0.33064 0.31232

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.977 -0.656 0.000
C2 0.000 0.507 0.000
O3 1.191 0.457 0.000
H4 -0.443 -1.607 0.000
H5 -1.613 -0.579 0.880
H6 -1.613 -0.579 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51882.43711.09001.08891.0889
C21.51881.19222.16002.13432.1343
O32.43711.19222.63313.11633.1163
H41.09002.16002.63311.78881.7888
H51.08892.13433.11631.78881.7604
H61.08892.13433.11631.78881.7604

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 127.627 C2 C1 H4 110.699
C2 C1 H5 108.741 C2 C1 H6 108.741
H4 C1 H5 110.362 H4 C1 H6 110.362
H5 C1 H6 107.864
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability