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All results from a given calculation for CH3COCH3 (Acetone)

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-190.887221
Energy at 298.15K-190.893433
HF Energy-190.887221
Nuclear repulsion energy119.653861
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 HF/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 3307 2985 6.85 75.88 0.59 0.74
2 A 3249 2933 0.00 6.16 0.75 0.86
3 A 3206 2894 5.90 184.15 0.02 0.04
4 A 1941 1752 131.80 7.85 0.63 0.77
5 A 1638 1478 0.00 40.21 0.75 0.86
6 A 1630 1472 30.50 41.56 0.75 0.86
7 A 1562 1410 22.11 2.17 0.74 0.85
8 A 1201 1084 0.13 5.12 0.60 0.75
9 A 1019 920 0.00 3.65 0.75 0.86
10 A 806 727 0.01 15.50 0.18 0.31
11 A 406 366 1.19 0.26 0.26 0.41
12 A 86 77 0.00 0.05 0.75 0.86
13 B 3306 2984 11.06 52.31 0.75 0.86
14 B 3258 2941 20.01 109.54 0.75 0.86
15 B 3199 2888 1.49 0.00 0.75 0.86
16 B 1662 1500 30.65 0.43 0.75 0.86
17 B 1626 1468 0.83 0.50 0.75 0.86
18 B 1553 1401 48.01 5.47 0.75 0.86
19 B 1315 1187 102.01 0.02 0.75 0.86
20 B 1257 1134 7.40 0.11 0.75 0.86
21 B 981 885 6.48 3.97 0.75 0.86
22 B 552 499 19.92 2.04 0.75 0.86
23 B 549 495 0.46 2.13 0.75 0.86
24 B 161 145 0.05 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19734.4 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 17812.2 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 HF/3-21G*
ABC
0.33517 0.28855 0.16443

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.193
O2 0.000 0.000 1.404
C3 0.000 1.278 -0.620
C4 0.000 -1.278 -0.620
H5 0.001 2.132 0.042
H6 -0.001 -2.132 0.042
H7 0.876 1.314 -1.259
H8 -0.877 1.314 -1.258
H9 -0.876 -1.314 -1.259
H10 0.877 -1.314 -1.258

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.21091.51501.51502.13712.13712.14572.14562.14572.1456
O21.21092.39422.39422.53002.53003.09653.09613.09653.0961
C31.51502.39422.55621.08023.47351.08511.08512.80962.8101
C41.51502.39422.55623.47351.08022.80962.81011.08511.0851
H52.13712.53001.08023.47354.26351.76871.76873.78593.7860
H62.13712.53003.47351.08024.26353.78593.78601.76871.7687
H72.14573.09651.08512.80961.76873.78591.75313.15832.6281
H82.14563.09611.08512.81011.76873.78601.75312.62813.1600
H92.14573.09652.80961.08513.78591.76873.15832.62811.7531
H102.14563.09612.81011.08513.78601.76872.62813.16001.7531

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.729 C1 C3 H7 110.124
C1 C3 H8 110.119 C1 C4 H6 109.729
C1 C4 H9 110.124 C1 C4 H10 110.119
O2 C1 C3 122.478 O2 C1 C4 122.478
C3 C1 C4 115.043 H5 C3 H7 109.540
H5 C3 H8 109.537 H6 C4 H9 109.540
H6 C4 H10 109.537 H7 C3 H8 107.762
H9 C4 H10 107.762
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.507      
2 O -0.543      
3 C -0.686      
4 C -0.686      
5 H 0.249      
6 H 0.249      
7 H 0.227      
8 H 0.227      
9 H 0.227      
10 H 0.227      


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 -3.138 3.138
CHELPG 0.000 0.000 -3.130 3.130
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.446 -0.000 0.000
y -0.000 -23.930 0.000
z 0.000 0.000 -29.452
Traceless
 xyz
x 2.245 -0.000 0.000
y -0.000 3.019 0.000
z 0.000 0.000 -5.264
Polar
3z2-r2-10.527
x2-y2-0.516
xy-0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.539 0.000 0.000
y 0.000 4.546 0.000
z 0.000 0.000 5.207


<r2> (average value of r2) Å2
<r2> 81.832
(<r2>)1/2 9.046