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All results from a given calculation for CH3COCH3 (Acetone)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-191.993302
Energy at 298.15K-191.999304
HF Energy-191.993302
Nuclear repulsion energy118.976638
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 B1B95/3-21G
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 3196 3057 4.45 69.44 0.61 0.76
2 A 3138 3002 0.00 7.63 0.75 0.86
3 A 3080 2947 2.96 179.23 0.01 0.02
4 A 1789 1711 93.91 3.52 0.50 0.66
5 A 1529 1463 0.00 38.82 0.75 0.86
6 A 1522 1456 31.67 38.80 0.74 0.85
7 A 1435 1372 31.23 3.72 0.67 0.80
8 A 1109 1061 0.15 4.56 0.57 0.73
9 A 932 891 0.00 3.19 0.75 0.86
10 A 779 745 0.63 11.32 0.17 0.30
11 A 379 362 0.90 0.28 0.40 0.57
12 A 68 65 0.00 0.07 0.75 0.86
13 B 3195 3056 9.54 49.62 0.75 0.86
14 B 3145 3009 11.59 98.76 0.75 0.86
15 B 3074 2941 0.31 0.21 0.75 0.86
16 B 1555 1487 33.11 0.39 0.75 0.86
17 B 1516 1450 1.11 1.05 0.75 0.86
18 B 1425 1364 63.19 7.75 0.75 0.86
19 B 1237 1183 102.43 0.00 0.75 0.86
20 B 1155 1105 8.60 0.00 0.75 0.86
21 B 907 868 7.05 2.78 0.75 0.86
22 B 510 488 12.09 2.06 0.75 0.86
23 B 510 488 0.55 1.29 0.75 0.86
24 B 153 146 0.62 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18666.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 17858.4 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 B1B95/3-21G
ABC
0.32702 0.29023 0.16312

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.195
O2 0.000 0.000 1.423
C3 0.000 1.273 -0.627
C4 0.000 -1.273 -0.627
H5 -0.000 2.138 0.035
H6 0.000 -2.138 0.035
H7 0.883 1.302 -1.273
H8 -0.883 1.302 -1.274
H9 -0.883 -1.302 -1.273
H10 0.883 -1.302 -1.274

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9 H10
C11.22811.51561.51562.14362.14362.15192.15202.15192.1520
O21.22812.41352.41352.54882.54883.12163.12203.12163.1220
C31.51562.41352.54611.08913.47431.09441.09432.79812.7977
C41.51562.41352.54613.47431.08912.79812.79771.09441.0943
H52.14362.54881.08913.47434.27511.78571.78583.78453.7845
H62.14362.54883.47431.08914.27513.78453.78451.78571.7858
H72.15193.12161.09442.79811.78573.78451.76583.14722.6043
H82.15203.12201.09432.79771.78583.78451.76582.60433.1458
H92.15193.12162.79811.09443.78451.78573.14722.60431.7658
H102.15203.12202.79771.09433.78451.78582.60433.14581.7658

picture of Acetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 109.682 C1 C3 H7 110.032
C1 C3 H8 110.039 C1 C4 H6 109.682
C1 C4 H9 110.032 C1 C4 H10 110.039
O2 C1 C3 122.861 O2 C1 C4 122.861
C3 C1 C4 114.278 H5 C3 H7 109.743
H5 C3 H8 109.751 H6 C4 H9 109.743
H6 C4 H10 109.751 H7 C3 H8 107.566
H9 C4 H10 107.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.397      
2 O -0.437      
3 C -0.687      
4 C -0.687      
5 H 0.245      
6 H 0.245      
7 H 0.231      
8 H 0.231      
9 H 0.231      
10 H 0.231      


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 -2.787 2.787
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.042 0.001 0.000
y 0.001 -23.555 0.000
z 0.000 0.000 -28.159
Traceless
 xyz
x 1.815 0.001 0.000
y 0.001 2.545 0.000
z 0.000 0.000 -4.360
Polar
3z2-r2-8.720
x2-y2-0.487
xy0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.611 0.000 0.000
y 0.000 4.883 0.000
z 0.000 0.000 5.331


<r2> (average value of r2) Å2
<r2> 81.899
(<r2>)1/2 9.050