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All results from a given calculation for CH3COCH2 (Acetonyl radical)

using model chemistry: QCISD/3-21G*

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/3-21G*
 hartrees
Energy at 0K-190.674258
Energy at 298.15K-190.678996
HF Energy-190.275684
Nuclear repulsion energy110.243455
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/3-21G*
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' 3248 3121 4.69      
2 A' 3139 3017 3.29      
3 A' 3128 3007 7.38      
4 A' 3034 2916 4.78      
5 A' 1556 1495 5.50      
6 A' 1519 1460 10.42      
7 A' 1454 1397 12.70      
8 A' 1423 1368 28.18      
9 A' 1246 1197 50.65      
10 A' 1066 1024 2.93      
11 A' 943 906 6.08      
12 A' 787 757 1.23      
13 A' 502 483 11.71      
14 A' 393 378 1.11      
15 A" 3094 2974 12.81      
16 A" 1563 1502 9.26      
17 A" 1084 1042 4.25      
18 A" 741 712 37.81      
19 A" 523 503 2.45      
20 A" 421 404 0.17      
21 A" 96 93 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 15479.8 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 14877.6 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 QCISD/3-21G*
ABC
0.34820 0.29865 0.16584

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.147 0.000
O2 0.557 1.297 0.000
C3 -1.435 0.010 0.000
C4 0.834 -1.146 0.000
H5 -2.059 0.901 0.000
H6 -1.909 -0.970 0.000
H7 1.896 -0.874 0.000
H8 0.611 -1.749 0.892
H9 0.611 -1.749 -0.892

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.27751.44191.53952.19242.21132.15392.18282.1828
O21.27752.37192.45922.64583.34912.55093.17433.1743
C31.44192.37192.54741.08731.08783.44702.84192.8419
C41.53952.45922.54743.54432.74871.09641.09961.0996
H52.19242.64581.08733.54431.87624.33523.86563.8656
H62.21133.34911.08782.74871.87623.80612.78402.7840
H72.15392.55093.44701.09644.33523.80611.79281.7928
H82.18283.17432.84191.09963.86562.78401.79281.7848
H92.18283.17432.84191.09963.86562.78401.79281.7848

picture of Acetonyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 119.531 C1 C3 H6 121.251
C1 C4 H7 108.426 C1 C4 H8 110.493
C1 C4 H9 110.493 O2 C1 C3 121.312
O2 C1 C4 121.336 C3 C1 C4 117.352
H5 C3 H6 119.218 H7 C4 H8 109.457
H7 C4 H9 109.457 H8 C4 H9 108.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability