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: B2PLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G
 hartrees
Energy at 0K-192.818156
Energy at 298.15K-192.824185
HF Energy-192.681442
Nuclear repulsion energy118.254577
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 B2PLYP/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3189 3189 7.69 66.76 0.62 0.76
2 A 3128 3128 0.00 9.52 0.75 0.86
3 A 3067 3067 8.00 208.35 0.01 0.02
4 A 1696 1696 82.38 2.44 0.48 0.65
5 A 1532 1532 0.00 36.97 0.75 0.86
6 A 1530 1530 37.80 37.88 0.73 0.84
7 A 1459 1459 19.55 3.11 0.67 0.80
8 A 1122 1122 0.10 6.12 0.61 0.76
9 A 949 949 0.00 4.69 0.75 0.86
10 A 800 800 0.29 12.51 0.15 0.26
11 A 388 388 1.13 0.47 0.57 0.72
12 A 74 74 0.00 0.10 0.75 0.86
13 B 3188 3188 12.45 54.77 0.75 0.86
14 B 3135 3135 24.21 107.70 0.75 0.86
15 B 3061 3061 2.24 0.58 0.75 0.86
16 B 1549 1549 27.18 0.42 0.75 0.86
17 B 1528 1528 1.21 1.83 0.75 0.86
18 B 1451 1451 46.25 6.52 0.75 0.86
19 B 1286 1286 85.95 0.00 0.75 0.86
20 B 1165 1165 4.21 0.01 0.75 0.86
21 B 944 944 4.49 4.04 0.75 0.86
22 B 533 533 15.38 2.60 0.75 0.86
23 B 495 495 0.21 1.54 0.75 0.86
24 B 142 142 0.11 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18704.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18704.3 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 B2PLYP/6-31G
ABC
0.33011 0.28143 0.16103

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.170
O2 0.000 0.000 1.420
C3 0.000 1.294 -0.620
C4 0.000 -1.294 -0.620
H5 0.001 2.142 0.066
H6 -0.001 -2.142 0.066
H7 0.882 1.348 -1.269
H8 -0.883 1.349 -1.268
H9 -0.882 -1.348 -1.269
H10 0.883 -1.349 -1.268

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.24991.51631.51632.14452.14452.16072.16062.16072.1606
O21.24992.41612.41612.53412.53413.13503.13463.13503.1346
C31.51632.41612.58771.09113.50381.09651.09652.86032.8607
C41.51632.41612.58773.50381.09112.86032.86071.09651.0965
H52.14452.53411.09113.50384.28401.78591.78593.83993.8399
H62.14452.53413.50381.09114.28403.83993.83991.78591.7859
H72.16073.13501.09652.86031.78593.83991.76553.22312.6974
H82.16063.13461.09652.86071.78593.83991.76552.69743.2246
H92.16073.13502.86031.09653.83991.78593.22312.69741.7655
H102.16063.13462.86071.09653.83991.78592.69743.22461.7655

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.591 C1 C3 H7 110.543
C1 C3 H8 110.538 C1 C4 H6 109.591
C1 C4 H9 110.543 C1 C4 H10 110.538
O2 C1 C3 121.427 O2 C1 C4 121.427
C3 C1 C4 117.145 H5 C3 H7 109.450
H5 C3 H8 109.447 H6 C4 H9 109.450
H6 C4 H10 109.447 H7 C3 H8 107.233
H9 C4 H10 107.233
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.373      
2 O -0.411      
3 C -0.482      
4 C -0.482      
5 H 0.178      
6 H 0.178      
7 H 0.162      
8 H 0.162      
9 H 0.162      
10 H 0.162      


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 -3.128 3.128
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.333 -0.000 0.000
y -0.000 -23.806 0.000
z 0.000 0.000 -29.300
Traceless
 xyz
x 2.220 -0.000 0.000
y -0.000 3.011 0.000
z 0.000 0.000 -5.231
Polar
3z2-r2-10.461
x2-y2-0.528
xy-0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.854 0.000 0.000
y 0.000 5.051 0.000
z 0.000 0.000 5.814


<r2> (average value of r2) Å2
<r2> 83.148
(<r2>)1/2 9.119