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All results from a given calculation for CH3COCH3 (Acetone)

using model chemistry: MP2/CEP-31G*

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-31G*
 hartrees
Energy at 0K-36.186530
Energy at 298.15K-36.192436
HF Energy-35.651080
Nuclear repulsion energy66.147198
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-31G*
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 3223 3060 12.07 63.82 0.67 0.80
2 A 3180 3019 0.00 5.50 0.75 0.86
3 A 3092 2935 11.05 249.87 0.01 0.02
4 A 1767 1678 125.09 7.57 0.51 0.67
5 A 1497 1421 28.98 22.78 0.71 0.83
6 A 1495 1419 0.00 24.24 0.75 0.86
7 A 1421 1349 15.46 5.59 0.20 0.33
8 A 1102 1046 0.32 8.26 0.72 0.84
9 A 912 866 0.00 9.05 0.75 0.86
10 A 810 769 0.68 14.88 0.15 0.26
11 A 373 354 0.98 0.51 0.72 0.84
12 A 42 40 0.00 0.19 0.75 0.86
13 B 3221 3058 13.03 45.29 0.75 0.86
14 B 3185 3024 34.64 91.66 0.75 0.86
15 B 3089 2932 6.10 0.52 0.75 0.86
16 B 1515 1438 27.83 0.56 0.75 0.86
17 B 1489 1414 0.09 1.00 0.75 0.86
18 B 1437 1365 70.24 0.83 0.75 0.86
19 B 1270 1206 55.89 0.80 0.75 0.86
20 B 1134 1076 3.21 0.00 0.75 0.86
21 B 917 870 2.82 5.98 0.75 0.86
22 B 523 497 13.79 2.44 0.75 0.86
23 B 485 461 0.21 0.54 0.75 0.86
24 B 146 138 0.00 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18661.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 17717.3 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 MP2/CEP-31G*
ABC
0.32602 0.27803 0.15912

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.184
O2 0.000 0.000 1.426
C3 0.000 1.303 -0.626
C4 0.000 -1.303 -0.626
H5 0.001 2.167 0.057
H6 -0.001 -2.167 0.057
H7 0.890 1.337 -1.280
H8 -0.891 1.338 -1.278
H9 -0.890 -1.337 -1.280
H10 0.891 -1.338 -1.278

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.24151.53451.53452.17062.17062.17362.17342.17362.1734
O21.24152.43072.43072.56322.56323.14663.14593.14663.1459
C31.53452.43072.60621.10093.53651.10501.10502.86232.8629
C41.53452.43072.60623.53651.10092.86232.86291.10501.1050
H52.17062.56321.10093.53654.33371.80681.80673.85483.8548
H62.17062.56323.53651.10094.33373.85483.85481.80681.8067
H72.17363.14661.10502.86231.80683.85481.78183.21342.6756
H82.17343.14591.10502.86291.80673.85481.78182.67563.2157
H92.17363.14662.86231.10503.85481.80683.21342.67561.7818
H102.17343.14592.86291.10503.85481.80672.67563.21571.7818

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.804 C1 C3 H7 109.800
C1 C3 H8 109.786 C1 C4 H6 109.804
C1 C4 H9 109.800 C1 C4 H10 109.786
O2 C1 C3 121.875 O2 C1 C4 121.875
C3 C1 C4 116.249 H5 C3 H7 109.986
H5 C3 H8 109.973 H6 C4 H9 109.986
H6 C4 H10 109.973 H7 C3 H8 107.459
H9 C4 H10 107.459
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability