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

using model chemistry: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-190.621548
Energy at 298.15K-190.626402
HF Energy-190.276846
Nuclear repulsion energy111.231437
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/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' 3333 3114 3.27      
2 A' 3224 3013 3.33      
3 A' 3209 2999 5.62      
4 A' 3114 2909 3.93      
5 A' 1586 1482 9.71      
6 A' 1563 1461 16.50      
7 A' 1492 1394 19.22      
8 A' 1429 1336 29.63      
9 A' 1258 1176 36.52      
10 A' 1092 1020 3.17      
11 A' 952 889 13.89      
12 A' 821 767 1.22      
13 A' 522 488 13.72      
14 A' 405 379 2.14      
15 A" 3172 2964 11.49      
16 A" 1596 1491 10.54      
17 A" 1118 1045 5.57      
18 A" 794 742 39.74      
19 A" 556 520 1.36      
20 A" 465 434 0.59      
21 A" 87 81 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 15894.0 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 14851.3 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 CISD/3-21G*
ABC
0.35673 0.30231 0.16883

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.147 0.000
O2 0.556 1.278 0.000
C3 -1.422 0.024 0.000
C4 0.823 -1.143 0.000
H5 -2.032 0.916 0.000
H6 -1.905 -0.944 0.000
H7 1.881 -0.878 0.000
H8 0.599 -1.742 0.887
H9 0.599 -1.742 -0.887

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.26111.42761.53022.17302.19472.14192.17092.1709
O21.26112.34282.43622.61373.31572.53093.14823.1482
C31.42762.34282.53091.08081.08123.42412.82702.8270
C41.53022.43622.53093.52082.73541.09001.09341.0934
H52.17302.61371.08083.52081.86434.30493.84423.8442
H62.19473.31571.08122.73541.86433.78612.77382.7738
H72.14192.53093.42411.09004.30493.78611.78181.7818
H82.17093.14822.82701.09343.84422.77381.78181.7740
H92.17093.14822.82701.09343.84422.77381.78181.7740

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 119.419 C1 C3 H6 121.427
C1 C4 H7 108.497 C1 C4 H8 110.566
C1 C4 H9 110.566 O2 C1 C3 121.108
O2 C1 C4 121.266 C3 C1 C4 117.626
H5 C3 H6 119.154 H7 C4 H8 109.384
H7 C4 H9 109.384 H8 C4 H9 108.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability