return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/cc-pVQZ

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=FULL/cc-pVQZ
 hartrees
Energy at 0K-192.280217
Energy at 298.15K-192.284822
HF Energy-191.426547
Nuclear repulsion energy112.967340
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=FULL/cc-pVQZ
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' 3355 3211 0.98      
2 A' 3235 3097 4.50      
3 A' 3223 3084 0.32      
4 A' 3096 2963 0.26      
5 A' 2125 2034 1120.70      
6 A' 1487 1423 17.63      
7 A' 1475 1412 35.53      
8 A' 1397 1337 52.95      
9 A' 1279 1225 85.85      
10 A' 1085 1039 6.85      
11 A' 907 868 14.74      
12 A' 828 793 2.55      
13 A' 537 514 16.49      
14 A' 384 367 1.96      
15 A" 3181 3044 2.64      
16 A" 1497 1433 9.29      
17 A" 1053 1008 9.58      
18 A" 703 673 32.90      
19 A" 531 508 1.48      
20 A" 263 252 0.01      
21 A" 101 97 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 15870.9 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 15190.1 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=FULL/cc-pVQZ
ABC
0.36587 0.31076 0.17336

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.168 0.000
O2 0.301 1.323 0.000
C3 -1.405 -0.256 0.000
C4 1.018 -0.938 0.000
H5 -2.162 0.506 0.000
H6 -1.682 -1.294 0.000
H7 2.013 -0.517 0.000
H8 0.874 -1.565 0.875
H9 0.874 -1.565 -0.875

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.19341.46761.50292.18782.22872.12632.12942.1294
O21.19342.32452.37182.59443.28342.51353.07183.0718
C31.46762.32452.51661.07391.07453.42762.77022.7702
C41.50292.37182.51663.49162.72271.08031.08601.0860
H52.18782.59441.07393.49161.86324.29793.77783.7778
H62.22873.28341.07452.72271.86323.77522.71502.7150
H72.12632.51353.42761.08034.29793.77521.77741.7774
H82.12943.07182.77021.08603.77782.71501.77741.7496
H92.12943.07182.77021.08603.77782.71501.77741.7496

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 117.990 C1 C3 H6 121.727
C1 C4 H7 109.713 C1 C4 H8 109.620
C1 C4 H9 109.620 O2 C1 C3 121.403
O2 C1 C4 122.785 C3 C1 C4 115.812
H5 C3 H6 120.283 H7 C4 H8 110.266
H7 C4 H9 110.266 H8 C4 H9 107.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability