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

using model chemistry: QCISD(T)/cc-pVDZ

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(T)/cc-pVDZ
 hartrees
Energy at 0K-152.786656
Energy at 298.15K-152.788901
HF Energy-152.308900
Nuclear repulsion energy62.221128
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(T)/cc-pVDZ
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' 858 818        
2 A' 460 438        
3 A" 3161 3013        
4 A" 1453 1385        
5 A" 940 896        
6 A" 106 101        
7 A' 3154 3006        
8 A' 3045 2902        
9 A' 1884 1796        
10 A' 1451 1383        
11 A' 1342 1279        
12 A' 1037 988        

Unscaled Zero Point Vibrational Energy (zpe) 9444.9 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 9002.0 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(T)/cc-pVDZ
ABC
2.69527 0.32638 0.30823

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.980 -0.666 0.000
C2 0.000 0.512 0.000
O3 1.195 0.466 0.000
H4 -0.433 -1.628 0.000
H5 -1.625 -0.586 0.893
H6 -1.625 -0.586 -0.893

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.53242.45171.10651.10431.1043
C21.53241.19602.18402.15472.1547
O32.45171.19602.65273.13923.1392
H41.10652.18402.65271.81751.8175
H51.10432.15473.13921.81751.7855
H61.10432.15473.13921.81751.7855

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 127.513 C2 C1 H4 110.669
C2 C1 H5 108.516 C2 C1 H6 108.516
H4 C1 H5 110.587 H4 C1 H6 110.587
H5 C1 H6 107.880
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability