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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-152.710767
Energy at 298.15K-152.712986
HF Energy-152.295559
Nuclear repulsion energy62.586985
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 MP2/6-31G*
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' 3218 3034 5.55      
2 A' 3111 2934 2.69      
3 A' 1975 1862 144.27      
4 A' 1525 1438 18.47      
5 A' 1419 1338 15.15      
6 A' 1091 1028 21.96      
7 A' 896 845 3.93      
8 A' 468 441 6.08      
9 A" 3220 3037 1.34      
10 A" 1524 1437 12.35      
11 A" 989 933 0.01      
12 A" 73 69 1.30      

Unscaled Zero Point Vibrational Energy (zpe) 9754.3 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 9198.3 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 MP2/6-31G*
ABC
2.73448 0.33084 0.31226

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.976 -0.657 0.000
C2 0.000 0.504 0.000
O3 1.192 0.461 0.000
H4 -0.449 -1.617 0.000
H5 -1.615 -0.576 0.882
H6 -1.615 -0.576 -0.882

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51712.43981.09471.09211.0921
C21.51711.19292.16792.13342.1334
O32.43981.19292.64803.11963.1196
H41.09472.16792.64801.79471.7947
H51.09212.13343.11961.79471.7645
H61.09212.13343.11961.79471.7645

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 127.992 C2 C1 H4 111.173
C2 C1 H5 108.601 C2 C1 H6 108.601
H4 C1 H5 110.304 H4 C1 H6 110.304
H5 C1 H6 107.765
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability