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

using model chemistry: CCSD/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 CCSD/6-31+G**
 hartrees
Energy at 0K-152.767442
Energy at 298.15K-152.769681
HF Energy-152.307037
Nuclear repulsion energy62.706280
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/6-31+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' 3205 2993        
2 A' 3102 2897        
3 A' 1944 1816        
4 A' 1508 1408        
5 A' 1412 1319        
6 A' 1081 1010        
7 A' 892 833        
8 A' 477 446        
9 A" 3214 3001        
10 A" 1506 1407        
11 A" 986 920        
12 A" 79 74        

Unscaled Zero Point Vibrational Energy (zpe) 9703.2 cm-1
Scaled (by 0.9338) Zero Point Vibrational Energy (zpe) 9060.9 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/6-31+G**
ABC
2.78016 0.33034 0.31241

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.977 -0.657 0.000
C2 0.000 0.502 0.000
O3 1.191 0.461 0.000
H4 -0.442 -1.608 0.000
H5 -1.611 -0.575 0.882
H6 -1.611 -0.575 -0.882

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51562.43901.09161.08931.0893
C21.51561.19172.15612.12932.1293
O32.43901.19172.63603.11503.1150
H41.09162.15612.63601.79221.7922
H51.08932.12933.11501.79221.7635
H61.08932.12933.11501.79221.7635

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 128.155 C2 C1 H4 110.528
C2 C1 H5 108.546 C2 C1 H6 108.546
H4 C1 H5 110.527 H4 C1 H6 110.527
H5 C1 H6 108.091
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability