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: PBE1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
2 1 yes CS 3A"

State 1 (1A1)

Jump to S2C1
Energy calculated at PBE1PBE/6-31G*
 hartrees
Energy at 0K-192.926111
Energy at 298.15K-192.932003
HF Energy-192.926111
Nuclear repulsion energy119.404990
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 PBE1PBE/6-31G*
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 3200 3041 6.02 70.84 0.61 0.75
2 A 3139 2983 0.00 10.05 0.75 0.86
3 A 3076 2923 5.20 204.31 0.01 0.02
4 A 1861 1769 161.04 6.75 0.46 0.63
5 A 1495 1421 25.51 30.51 0.73 0.84
6 A 1490 1416 0.00 30.61 0.75 0.86
7 A 1407 1337 18.30 3.01 0.69 0.82
8 A 1094 1040 0.09 4.05 0.56 0.72
9 A 890 846 0.00 3.56 0.75 0.86
10 A 808 768 0.78 10.94 0.16 0.28
11 A 377 359 1.33 0.35 0.50 0.66
12 A 40 38 0.00 0.07 0.75 0.86
13 B 3199 3040 8.65 55.76 0.75 0.86
14 B 3145 2989 15.60 105.59 0.75 0.86
15 B 3070 2917 0.95 0.57 0.75 0.86
16 B 1513 1438 23.74 0.36 0.75 0.86
17 B 1485 1411 0.28 1.63 0.75 0.86
18 B 1415 1345 80.09 4.99 0.75 0.86
19 B 1259 1196 67.21 0.71 0.75 0.86
20 B 1131 1074 5.47 0.01 0.75 0.86
21 B 900 856 3.77 3.40 0.75 0.86
22 B 534 508 14.82 1.64 0.75 0.86
23 B 489 465 0.19 1.07 0.75 0.86
24 B 137 130 0.14 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18576.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 17653.6 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 PBE1PBE/6-31G*
ABC
0.33851 0.28497 0.16413

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.185
O2 0.000 0.000 1.397
C3 0.000 1.285 -0.613
C4 0.000 -1.285 -0.613
H5 0.000 2.141 0.064
H6 -0.000 -2.141 0.064
H7 0.880 1.332 -1.265
H8 -0.881 1.332 -1.265
H9 -0.880 -1.332 -1.265
H10 0.881 -1.332 -1.265

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.21181.51261.51262.14482.14482.15672.15672.15672.1567
O21.21182.38532.38532.52232.52233.10413.10383.10413.1038
C31.51262.38532.57031.09143.49281.09671.09672.83692.8373
C41.51262.38532.57033.49281.09142.83692.83731.09671.0967
H52.14482.52231.09143.49284.28281.78811.78813.82173.8217
H62.14482.52233.49281.09144.28283.82173.82171.78811.7881
H72.15673.10411.09672.83691.78813.82171.76073.19232.6637
H82.15673.10381.09672.83731.78813.82171.76072.66373.1936
H92.15673.10412.83691.09673.82171.78813.19232.66371.7607
H102.15673.10382.83731.09673.82171.78812.66373.19361.7607

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.853 C1 C3 H7 110.480
C1 C3 H8 110.479 C1 C4 H6 109.853
C1 C4 H9 110.480 C1 C4 H10 110.479
O2 C1 C3 121.826 O2 C1 C4 121.826
C3 C1 C4 116.348 H5 C3 H7 109.601
H5 C3 H8 109.601 H6 C4 H9 109.601
H6 C4 H10 109.601 H7 C3 H8 106.775
H9 C4 H10 106.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.452      
2 O -0.427      
3 C -0.611      
4 C -0.611      
5 H 0.210      
6 H 0.210      
7 H 0.194      
8 H 0.194      
9 H 0.194      
10 H 0.194      


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 -2.856 2.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.826 -0.000 0.000
y -0.000 -23.342 0.000
z 0.000 0.000 -28.061
Traceless
 xyz
x 1.876 -0.000 0.000
y -0.000 2.602 0.000
z 0.000 0.000 -4.478
Polar
3z2-r2-8.955
x2-y2-0.484
xy-0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.978 0.000 0.000
y 0.000 5.311 0.000
z 0.000 0.000 5.719


<r2> (average value of r2) Å2
<r2> 81.576
(<r2>)1/2 9.032

State 2 (3A")

Jump to S1C1
Energy calculated at PBE1PBE/6-31G*
 hartrees
Energy at 0K-192.808008
Energy at 298.15K-192.813889
HF Energy-192.808008
Nuclear repulsion energy117.692845
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 PBE1PBE/6-31G*
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' 3171 3013 10.78      
2 A' 3123 2968 23.48      
3 A' 3020 2870 46.99      
4 A' 1528 1452 8.94      
5 A' 1497 1423 8.75      
6 A' 1425 1354 1.79      
7 A' 1321 1256 6.39      
8 A' 1111 1056 0.50      
9 A' 1004 954 0.04      
10 A' 812 772 7.87      
11 A' 371 352 1.34      
12 A' 316 300 2.13      
13 A' 187 178 0.53      
14 A" 3170 3013 12.30      
15 A" 3125 2969 4.07      
16 A" 3015 2865 31.79      
17 A" 1503 1429 0.07      
18 A" 1485 1411 7.25      
19 A" 1398 1328 0.00      
20 A" 1171 1112 0.01      
21 A" 973 925 1.04      
22 A" 968 920 0.99      
23 A" 353 335 2.73      
24 A" 185 176 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 18115.4 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 17215.1 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 PBE1PBE/6-31G*
ABC
0.34220 0.27382 0.16453

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.209 0.213 0.000
O2 -0.631 1.238 0.000
C3 0.209 -0.555 1.299
C4 0.209 -0.555 -1.299
H5 -0.728 -1.117 1.444
H6 -0.728 -1.117 -1.444
H7 1.041 -1.265 1.290
H8 0.335 0.118 2.153
H9 1.041 -1.265 -1.290
H10 0.335 0.118 -2.153

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.32521.50871.50872.17552.17552.13122.15852.13122.1585
O21.32522.36772.36772.76462.76463.27512.61233.27512.6123
C31.50872.36772.59741.10222.95271.09441.09422.81083.5185
C41.50872.36772.59742.95271.10222.81083.51851.09441.0942
H52.17552.76461.10222.95272.88881.78231.77683.26063.9490
H62.17552.76462.95271.10222.88883.26063.94901.78231.7768
H72.13123.27511.09442.81081.78233.26061.77552.58063.7766
H82.15852.61231.09423.51851.77683.94901.77553.77664.3053
H92.13123.27512.81081.09443.26061.78232.58063.77661.7755
H102.15852.61233.51851.09423.94901.77683.77664.30531.7755

picture of Acetone state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.241      
2 O -0.254      
3 C -0.567      
4 C -0.567      
5 H 0.182      
6 H 0.182      
7 H 0.191      
8 H 0.199      
9 H 0.191      
10 H 0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.475 -1.637 0.000 1.705
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.730 0.228 0.000
y 0.228 -26.383 0.000
z 0.000 0.000 -22.653
Traceless
 xyz
x -1.212 0.228 0.000
y 0.228 -2.192 0.000
z 0.000 0.000 3.404
Polar
3z2-r26.807
x2-y20.653
xy0.228
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.530 -0.517 0.000
y -0.517 5.380 0.000
z 0.000 0.000 5.816


<r2> (average value of r2) Å2
<r2> 81.951
(<r2>)1/2 9.053