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: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-192.923154
Energy at 298.15K-192.928968
HF Energy-192.923154
Nuclear repulsion energy118.641821
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 PBEPBE/6-31G(2df,p)
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 3102 3070 6.43 68.12 0.61 0.76
2 A 3040 3009 0.00 11.43 0.75 0.86
3 A 2978 2947 5.07 213.49 0.00 0.01
4 A 1762 1744 139.73 6.53 0.34 0.51
5 A 1417 1403 22.08 27.50 0.71 0.83
6 A 1412 1398 0.00 26.67 0.75 0.86
7 A 1321 1308 17.69 4.85 0.47 0.64
8 A 1041 1031 0.11 3.56 0.47 0.64
9 A 839 830 0.00 1.87 0.75 0.86
10 A 769 761 1.80 11.49 0.15 0.25
11 A 363 359 1.28 0.44 0.54 0.70
12 A 54 54 0.00 0.07 0.75 0.86
13 B 3101 3069 9.89 55.36 0.75 0.86
14 B 3046 3015 13.17 99.93 0.75 0.86
15 B 2972 2941 1.18 1.44 0.75 0.86
16 B 1437 1422 16.66 0.18 0.75 0.86
17 B 1406 1391 0.12 1.82 0.75 0.86
18 B 1324 1311 65.04 5.23 0.75 0.86
19 B 1192 1180 69.93 1.20 0.75 0.86
20 B 1072 1061 3.88 0.11 0.75 0.86
21 B 846 837 7.89 2.72 0.75 0.86
22 B 509 504 12.10 1.52 0.75 0.86
23 B 472 467 0.04 0.64 0.75 0.86
24 B 140 139 0.16 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17807.7 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 17624.3 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 PBEPBE/6-31G(2df,p)
ABC
0.33290 0.28230 0.16201

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.190
O2 0.000 0.000 1.409
C3 0.000 1.291 -0.618
C4 0.000 -1.291 -0.618
H5 -0.000 2.157 0.058
H6 0.000 -2.157 0.058
H7 0.884 1.333 -1.277
H8 -0.884 1.334 -1.277
H9 -0.884 -1.333 -1.277
H10 0.884 -1.334 -1.277

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.21901.52291.52292.16062.16062.17042.17062.17042.1706
O21.21902.40292.40292.54462.54463.12603.12643.12603.1264
C31.52292.40292.58271.09793.51361.10371.10362.84712.8471
C41.52292.40292.58273.51361.09792.84712.84711.10371.1036
H52.16062.54461.09793.51364.31331.80041.80063.83993.8400
H62.16062.54463.51361.09794.31333.83993.84001.80041.8006
H72.17043.12601.10372.84711.80043.83991.76793.20002.6670
H82.17063.12641.10362.84711.80063.84001.76792.66703.1995
H92.17043.12602.84711.10373.83991.80043.20002.66701.7679
H102.17063.12642.84711.10363.84001.80062.66703.19951.7679

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.997 C1 C3 H7 110.426
C1 C3 H8 110.443 C1 C4 H6 109.997
C1 C4 H9 110.426 C1 C4 H10 110.443
O2 C1 C3 122.013 O2 C1 C4 122.013
C3 C1 C4 115.974 H5 C3 H7 109.727
H5 C3 H8 109.743 H6 C4 H9 109.727
H6 C4 H10 109.743 H7 C3 H8 106.442
H9 C4 H10 106.442
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.370      
2 O -0.262      
3 C -0.501      
4 C -0.501      
5 H 0.152      
6 H 0.152      
7 H 0.148      
8 H 0.148      
9 H 0.148      
10 H 0.148      


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 -2.652 2.652
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.813 0.001 0.000
y 0.001 -23.438 0.000
z 0.000 0.000 -27.801
Traceless
 xyz
x 1.807 0.001 0.000
y 0.001 2.369 0.000
z 0.000 0.000 -4.175
Polar
3z2-r2-8.351
x2-y2-0.375
xy0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.308 0.000 0.000
y 0.000 6.011 0.000
z 0.000 0.000 6.034


<r2> (average value of r2) Å2
<r2> 82.377
(<r2>)1/2 9.076