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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-36.235491
Energy at 298.15K-36.241469
HF Energy-35.662501
Nuclear repulsion energy66.545174
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 3205 3054 9.85 64.20 0.66 0.80
2 A 3155 3006 1.57 21.81 0.71 0.83
3 A 3070 2925 7.84 246.38 0.01 0.02
4 A 1734 1653 111.53 9.16 0.69 0.81
5 A 1511 1439 25.69 20.50 0.68 0.81
6 A 1502 1431 6.51 19.03 0.75 0.85
7 A 1424 1357 13.61 2.02 0.30 0.46
8 A 1101 1049 0.08 4.85 0.52 0.68
9 A 902 859 0.17 2.92 0.64 0.78
10 A 796 759 1.34 15.79 0.13 0.24
11 A 372 354 0.85 0.38 0.55 0.71
12 A 96 91 0.02 0.21 0.75 0.85
13 B 3204 3053 10.77 50.80 0.75 0.86
14 B 3159 3010 24.42 83.51 0.75 0.86
15 B 3066 2921 4.11 0.25 0.75 0.86
16 B 1522 1450 22.20 0.97 0.75 0.86
17 B 1504 1433 2.85 1.91 0.75 0.86
18 B 1431 1364 67.68 0.99 0.75 0.86
19 B 1262 1202 59.25 1.55 0.75 0.86
20 B 1129 1075 0.78 0.08 0.75 0.86
21 B 915 872 5.40 4.14 0.75 0.86
22 B 527 502 14.34 2.25 0.75 0.86
23 B 474 451 0.61 1.04 0.75 0.86
24 B 128 122 0.10 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18593.6 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 17716.0 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
0.33128 0.27995 0.16083

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 0.179
O2 0.000 0.000 1.415
C3 0.000 1.299 -0.621
C4 0.000 -1.299 -0.621
H5 0.189 2.140 0.047
H6 -0.189 -2.140 0.047
H7 0.753 1.266 -1.416
H8 -0.978 1.428 -1.101
H9 -0.753 -1.266 -1.416
H10 0.978 -1.428 -1.101

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.23581.52571.52572.15292.15292.17112.15282.17112.1528
O21.23582.41522.41522.54712.54713.19103.05393.19103.0539
C31.52572.41522.59801.09133.50901.09541.09692.78892.9366
C41.52572.41522.59803.50901.09132.78892.93661.09541.0969
H52.15292.54711.09133.50904.29771.79531.78573.82533.8309
H62.15292.54713.50901.09134.29773.82533.83091.79531.7857
H72.17113.19101.09542.78891.79533.82531.76702.94642.7216
H82.15283.05391.09692.93661.78573.83091.76702.72163.4615
H92.17113.19102.78891.09543.82531.79532.94642.72161.7670
H102.15283.05392.93661.09693.83091.78572.72163.46151.7670

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.584 C1 C3 H7 110.779
C1 C3 H8 109.254 C1 C4 H6 109.584
C1 C4 H9 110.779 C1 C4 H10 109.254
O2 C1 C3 121.637 O2 C1 C4 121.637
C3 C1 C4 116.725 H5 C3 H7 110.374
H5 C3 H8 109.389 H6 C4 H9 110.374
H6 C4 H10 109.389 H7 C3 H8 107.420
H9 C4 H10 107.420
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability