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: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-193.074618
Energy at 298.15K-193.080486
HF Energy-193.074618
Nuclear repulsion energy119.626024
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 B1B95/6-31+G**
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 3199 3060 5.07 71.58 0.62 0.76
2 A 3140 3004 0.45 14.94 0.71 0.83
3 A 3073 2940 6.04 269.73 0.01 0.01
4 A 1835 1756 205.39 12.33 0.59 0.74
5 A 1473 1409 24.03 18.13 0.68 0.81
6 A 1467 1403 6.48 15.87 0.74 0.85
7 A 1387 1327 20.79 1.70 0.60 0.75
8 A 1080 1033 0.03 2.81 0.40 0.58
9 A 879 841 0.06 1.40 0.70 0.82
10 A 805 771 1.24 13.89 0.15 0.26
11 A 375 359 1.44 0.48 0.66 0.79
12 A 40 38 0.01 0.27 0.74 0.85
13 B 3198 3060 9.08 56.17 0.75 0.86
14 B 3146 3009 14.45 99.95 0.75 0.86
15 B 3068 2935 1.53 1.68 0.75 0.86
16 B 1490 1426 26.08 0.20 0.75 0.86
17 B 1461 1398 0.74 1.45 0.75 0.86
18 B 1398 1337 83.87 0.85 0.75 0.86
19 B 1250 1195 61.72 4.05 0.75 0.86
20 B 1116 1067 3.15 0.05 0.75 0.86
21 B 894 855 4.16 2.99 0.75 0.86
22 B 532 509 14.47 1.32 0.75 0.86
23 B 487 466 0.45 0.65 0.75 0.86
24 B 124 119 0.01 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18458.4 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 17657.3 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 B1B95/6-31+G**
ABC
0.34049 0.28558 0.16475

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.181
O2 0.000 0.000 1.394
C3 0.000 1.284 -0.610
C4 0.000 -1.284 -0.610
H5 0.094 2.136 0.061
H6 -0.094 -2.136 0.061
H7 0.816 1.290 -1.338
H8 -0.931 1.370 -1.178
H9 -0.816 -1.290 -1.338
H10 0.931 -1.370 -1.178

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.21311.50841.50842.14102.14102.15312.14202.15312.1420
O21.21312.38032.38032.51912.51913.12903.05863.12903.0586
C31.50842.38032.56881.08813.48651.09301.09382.79712.8693
C41.50842.38032.56883.48651.08812.79712.86931.09301.0938
H52.14102.51911.08813.48654.27531.78651.78093.81063.8108
H62.14102.51913.48651.08814.27533.81063.81081.78651.7809
H72.15313.12901.09302.79711.78653.81061.75633.05342.6673
H82.14203.05861.09382.86931.78093.81081.75632.66733.3125
H92.15313.12902.79711.09303.81061.78653.05342.66731.7563
H102.14203.05862.86931.09383.81081.78092.66733.31251.7563

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 110.036 C1 C3 H7 110.705
C1 C3 H8 109.778 C1 C4 H6 110.036
C1 C4 H9 110.705 C1 C4 H10 109.778
O2 C1 C3 121.627 O2 C1 C4 121.627
C3 C1 C4 116.746 H5 C3 H7 109.984
H5 C3 H8 109.419 H6 C4 H9 109.984
H6 C4 H10 109.419 H7 C3 H8 106.860
H9 C4 H10 106.860
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.369      
2 O -0.411      
3 C -0.523      
4 C -0.523      
5 H 0.194      
6 H 0.194      
7 H 0.172      
8 H 0.178      
9 H 0.172      
10 H 0.178      


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 -3.169 3.169
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.240 -0.049 0.000
y -0.049 -23.610 0.000
z 0.000 0.000 -29.137
Traceless
 xyz
x 2.133 -0.049 0.000
y -0.049 3.079 0.000
z 0.000 0.000 -5.212
Polar
3z2-r2-10.423
x2-y2-0.631
xy-0.049
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.542 -0.020 0.000
y -0.020 6.086 0.000
z 0.000 0.000 6.621


<r2> (average value of r2) Å2
<r2> 81.676
(<r2>)1/2 9.037