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All results from a given calculation for CH3COCH3 (Acetone)

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-35.962055
Energy at 298.15K-35.967934
HF Energy-35.567490
Nuclear repulsion energy65.472482
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/CEP-121G
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 3116 3042 15.09 62.09 0.68 0.81
2 A 3065 2991 0.06 8.96 0.75 0.85
3 A 2975 2904 13.70 259.34 0.01 0.02
4 A 1598 1559 38.00 3.74 0.69 0.82
5 A 1501 1465 48.62 32.72 0.68 0.81
6 A 1492 1457 0.23 24.83 0.75 0.86
7 A 1445 1410 15.98 1.64 0.38 0.55
8 A 1109 1082 0.23 8.41 0.61 0.76
9 A 928 906 0.01 4.72 0.75 0.86
10 A 777 759 0.79 19.54 0.12 0.22
11 A 369 361 0.72 0.64 0.58 0.73
12 A 17 16 0.00 0.17 0.75 0.86
13 B 3114 3040 17.94 51.52 0.75 0.86
14 B 3072 2998 44.54 99.63 0.75 0.86
15 B 2970 2899 9.44 0.10 0.75 0.86
16 B 1508 1472 25.26 0.49 0.75 0.86
17 B 1504 1468 3.13 1.26 0.75 0.86
18 B 1438 1403 44.25 2.78 0.75 0.86
19 B 1267 1237 70.71 0.65 0.75 0.86
20 B 1142 1115 0.29 0.01 0.75 0.86
21 B 932 910 4.51 5.64 0.75 0.86
22 B 518 505 14.69 3.08 0.75 0.86
23 B 473 461 0.27 1.29 0.75 0.86
24 B 145 141 0.00 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18237.9 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 17800.2 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/CEP-121G
ABC
0.32001 0.27087 0.15534

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.166
O2 0.000 0.000 1.445
C3 0.000 1.322 -0.631
C4 0.000 -1.322 -0.631
H5 0.034 2.168 0.068
H6 -0.034 -2.168 0.068
H7 0.871 1.361 -1.308
H8 -0.909 1.391 -1.253
H9 -0.871 -1.361 -1.308
H10 0.909 -1.391 -1.253

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.27951.54301.54302.17092.17092.18702.18542.18702.1854
O21.27952.46082.46082.56882.56883.19243.16923.19243.1692
C31.54302.46082.64331.09873.55971.10381.10412.90102.9283
C41.54302.46082.64333.55971.09872.90102.92831.10381.1041
H52.17092.56881.09873.55974.33751.80161.80033.89543.8969
H62.17092.56883.55971.09874.33753.89543.89691.80161.8003
H72.18703.19241.10382.90101.80163.89541.78073.23182.7536
H82.18543.16921.10412.92831.80033.89691.78072.75363.3242
H92.18703.19242.90101.10383.89541.80163.23182.75361.7807
H102.18543.16922.92831.10413.89691.80032.75363.32421.7807

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.379 C1 C3 H7 110.338
C1 C3 H8 110.191 C1 C4 H6 109.379
C1 C4 H9 110.338 C1 C4 H10 110.191
O2 C1 C3 121.068 O2 C1 C4 121.068
C3 C1 C4 117.864 H5 C3 H7 109.771
H5 C3 H8 109.624 H6 C4 H9 109.771
H6 C4 H10 109.624 H7 C3 H8 107.516
H9 C4 H10 107.516
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability