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

using model chemistry: CISD/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 CISD/cc-pVDZ
 hartrees
Energy at 0K-152.721233
Energy at 298.15K-152.723534
HF Energy-152.311186
Nuclear repulsion energy62.819225
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 CISD/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' 3237 2984 7.51      
2 A' 3130 2885 6.09      
3 A' 2031 1872 163.10      
4 A' 1491 1374 17.20      
5 A' 1393 1284 8.34      
6 A' 1080 995 16.44      
7 A' 898 827 2.50      
8 A' 479 442 5.55      
9 A" 3242 2988 2.69      
10 A" 1494 1377 10.67      
11 A" 976 900 0.03      
12 A" 111 102 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 9780.5 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 9015.6 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 CISD/cc-pVDZ
ABC
2.78901 0.33071 0.31305

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.966 -0.672 0.000
C2 0.000 0.501 0.000
O3 1.179 0.481 0.000
H4 -0.420 -1.626 0.000
H5 -1.608 -0.596 0.887
H6 -1.608 -0.596 -0.887

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.52012.43521.09861.09701.0970
C21.52011.17912.16792.13912.1391
O32.43521.17912.64423.11633.1163
H41.09862.16792.64421.80451.8045
H51.09702.13913.11631.80451.7731
H61.09702.13913.11631.80451.7731

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 128.450 C2 C1 H4 110.729
C2 C1 H5 108.559 C2 C1 H6 108.559
H4 C1 H5 110.539 H4 C1 H6 110.539
H5 C1 H6 107.829
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability