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: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-192.100177
Energy at 298.15K-192.106123
HF Energy-192.100177
Nuclear repulsion energy118.113786
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 TPSSh/3-21G*
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 3155 3047 8.24 75.83 0.59 0.74
2 A 3093 2987 0.00 8.67 0.75 0.86
3 A 3044 2940 5.62 188.00 0.01 0.02
4 A 1730 1670 79.72 2.45 0.47 0.64
5 A 1533 1480 0.00 39.97 0.75 0.86
6 A 1523 1471 32.03 39.85 0.74 0.85
7 A 1431 1381 27.23 4.54 0.61 0.76
8 A 1103 1065 0.00 5.18 0.59 0.74
9 A 924 892 0.00 3.42 0.75 0.86
10 A 751 726 0.79 12.33 0.17 0.30
11 A 370 357 0.79 0.37 0.39 0.57
12 A 71 69 0.00 0.08 0.75 0.86
13 B 3154 3046 15.47 53.52 0.75 0.86
14 B 3101 2994 20.05 104.89 0.75 0.86
15 B 3038 2934 1.20 0.53 0.75 0.86
16 B 1558 1504 27.72 0.29 0.75 0.86
17 B 1520 1468 0.71 1.24 0.75 0.86
18 B 1421 1372 42.89 8.44 0.75 0.86
19 B 1213 1171 100.91 0.01 0.75 0.86
20 B 1145 1106 5.93 0.00 0.75 0.86
21 B 887 857 12.19 2.92 0.75 0.86
22 B 498 481 0.14 1.25 0.75 0.86
23 B 496 479 11.43 2.23 0.75 0.86
24 B 151 145 0.60 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18454.4 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 17821.4 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 TPSSh/3-21G*
ABC
0.32169 0.28612 0.16057

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.197
O2 0.000 0.000 1.435
C3 0.000 1.283 -0.633
C4 0.000 -1.283 -0.633
H5 -0.000 2.151 0.031
H6 0.000 -2.151 0.031
H7 0.887 1.311 -1.281
H8 -0.886 1.310 -1.282
H9 -0.887 -1.311 -1.281
H10 0.886 -1.310 -1.282

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.23891.52791.52792.15712.15712.16522.16522.16522.1652
O21.23892.43422.43422.56862.56863.14403.14443.14403.1444
C31.52792.43422.56591.09293.49741.09871.09872.81652.8162
C41.52792.43422.56593.49741.09292.81652.81621.09871.0987
H52.15712.56861.09293.49744.30161.79331.79343.80653.8065
H62.15712.56863.49741.09294.30163.80653.80651.79331.7934
H72.16523.14401.09872.81651.79333.80651.77283.16462.6207
H82.16523.14441.09872.81621.79343.80651.77282.62073.1633
H92.16523.14402.81651.09873.80651.79333.16462.62071.7728
H102.16523.14442.81621.09873.80651.79342.62073.16331.7728

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.674 C1 C3 H7 109.965
C1 C3 H8 109.973 C1 C4 H6 109.674
C1 C4 H9 109.965 C1 C4 H10 109.973
O2 C1 C3 122.891 O2 C1 C4 122.891
C3 C1 C4 114.219 H5 C3 H7 109.816
H5 C3 H8 109.825 H6 C4 H9 109.816
H6 C4 H10 109.825 H7 C3 H8 107.560
H9 C4 H10 107.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.394      
2 O -0.432      
3 C -0.666      
4 C -0.666      
5 H 0.237      
6 H 0.237      
7 H 0.224      
8 H 0.224      
9 H 0.224      
10 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.723 2.723
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.669 0.000 0.000
y 0.000 5.060 0.000
z 0.000 0.000 5.442


<r2> (average value of r2) Å2
<r2> 82.959
(<r2>)1/2 9.108