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 CH3COCH3 (Acetone)

using model chemistry: MP2/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/cc-pVQZ
 hartrees
Energy at 0K-192.838804
Energy at 298.15K-192.844720
HF Energy-192.047571
Nuclear repulsion energy119.779601
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/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 3209 3044 2.93 57.51 0.63 0.77
2 A 3158 2995 0.00 8.95 0.75 0.86
3 A 3081 2922 4.84 289.52 0.00 0.01
4 A 1769 1678 124.75 10.11 0.64 0.78
5 A 1483 1407 29.33 14.02 0.63 0.77
6 A 1481 1404 0.00 9.88 0.75 0.86
7 A 1389 1317 15.67 1.07 0.68 0.81
8 A 1086 1030 0.05 2.56 0.22 0.36
9 A 889 843 0.00 0.36 0.75 0.86
10 A 808 766 1.71 14.87 0.10 0.18
11 A 378 359 1.24 0.50 0.69 0.82
12 A 36 34 0.00 0.07 0.75 0.86
13 B 3208 3043 7.12 45.90 0.75 0.86
14 B 3164 3001 9.90 85.84 0.75 0.86
15 B 3077 2918 0.78 0.32 0.75 0.86
16 B 1505 1427 20.13 0.00 0.75 0.86
17 B 1475 1398 0.28 0.88 0.75 0.86
18 B 1398 1326 70.58 0.02 0.75 0.86
19 B 1255 1191 52.03 2.72 0.75 0.86
20 B 1120 1062 1.88 0.12 0.75 0.86
21 B 900 853 5.17 1.46 0.75 0.86
22 B 533 505 14.57 1.70 0.75 0.86
23 B 485 460 0.44 0.46 0.75 0.86
24 B 143 136 0.05 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18515.3 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 17559.9 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/cc-pVQZ
ABC
0.33878 0.28817 0.16515

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.183
O2 0.000 0.000 1.398
C3 0.000 1.279 -0.613
C4 0.000 -1.279 -0.613
H5 -0.002 2.133 0.056
H6 0.002 -2.133 0.056
H7 0.877 1.315 -1.257
H8 -0.874 1.314 -1.261
H9 -0.877 -1.315 -1.257
H10 0.874 -1.314 -1.261

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.21521.50661.50662.13642.13642.13832.13882.13832.1388
O21.21522.38342.38342.52002.52003.09023.09203.09023.0920
C31.50662.38342.55861.08393.47671.08881.08882.81322.8120
C41.50662.38342.55863.47671.08392.81322.81201.08881.0888
H52.13642.52001.08393.47674.26511.77881.77913.79143.7916
H62.13642.52003.47671.08394.26513.79143.79161.77881.7791
H72.13833.09021.08882.81321.77883.79141.75113.16112.6285
H82.13883.09201.08882.81201.77913.79161.75112.62853.1558
H92.13833.09022.81321.08883.79141.77883.16112.62851.7511
H102.13883.09202.81201.08883.79161.77912.62853.15581.7511

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 110.038 C1 C3 H7 109.902
C1 C3 H8 109.948 C1 C4 H6 110.038
C1 C4 H9 109.902 C1 C4 H10 109.948
O2 C1 C3 121.885 O2 C1 C4 121.885
C3 C1 C4 116.229 H5 C3 H7 109.910
H5 C3 H8 109.939 H6 C4 H9 109.910
H6 C4 H10 109.939 H7 C3 H8 107.058
H9 C4 H10 107.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability