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 C3H6O (Acetone enol)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-193.068287
Energy at 298.15K-193.074688
HF Energy-193.068287
Nuclear repulsion energy120.426629
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 B3PW91/6-31G**
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' 3843 3683 23.00      
2 A' 3277 3140 9.51      
3 A' 3175 3043 4.04      
4 A' 3174 3042 14.67      
5 A' 3059 2932 17.06      
6 A' 1749 1676 144.33      
7 A' 1499 1436 6.37      
8 A' 1462 1401 1.65      
9 A' 1425 1366 46.81      
10 A' 1380 1322 5.86      
11 A' 1214 1163 154.37      
12 A' 1026 983 28.29      
13 A' 984 943 6.16      
14 A' 877 840 3.56      
15 A' 482 462 19.05      
16 A' 409 392 1.66      
17 A" 3125 2995 13.73      
18 A" 1479 1417 7.98      
19 A" 1074 1029 2.07      
20 A" 799 766 75.43      
21 A" 728 698 2.25      
22 A" 507 486 0.98      
23 A" 447 429 118.38      
24 A" 180 173 1.49      

Unscaled Zero Point Vibrational Energy (zpe) 18685.0 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 17907.7 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 B3PW91/6-31G**
ABC
0.33734 0.30346 0.16464

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.874 -1.117 0.000
C2 0.000 0.096 0.000
C3 0.439 1.360 0.000
O4 -1.318 -0.258 0.000
H5 1.929 -0.841 0.000
H6 0.667 -1.733 0.881
H7 0.667 -1.733 -0.881
H8 1.500 1.575 0.000
H9 -0.243 2.207 0.000
H10 -1.852 0.546 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.49512.51512.35411.09091.09541.09542.76383.50663.1930
C21.49511.33801.36462.14512.13752.13752.10622.12491.9058
C32.51511.33802.38832.65883.22493.22491.08251.08702.4311
O42.35411.36462.38833.29932.62532.62533.36132.68940.9651
H51.09092.14512.65883.29931.77971.77972.45433.74314.0278
H61.09542.13753.22492.62531.77971.76263.52384.13913.5094
H71.09542.13753.22492.62531.77971.76263.52384.13913.5094
H82.76382.10621.08253.36132.45433.52383.52381.85343.5060
H93.50662.12491.08702.68943.74314.13914.13911.85342.3129
H103.19301.90582.43110.96514.02783.50943.50943.50602.3129

picture of Acetone enol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 125.094 C1 C2 O4 110.730
C2 C1 H5 111.134 C2 C1 H6 110.250
C2 C1 H7 110.250 C2 C3 H8 120.587
C2 C3 H9 122.047 C2 O4 H10 108.564
C3 C2 O4 124.177 H5 C1 H6 108.983
H5 C1 H7 108.983 H6 C1 H7 107.141
H8 C3 H9 117.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.427      
2 C 0.355      
3 C -0.388      
4 O -0.539      
5 H 0.140      
6 H 0.154      
7 H 0.154      
8 H 0.121      
9 H 0.102      
10 H 0.328      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.118 0.552 0.000 0.565
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.899 -3.332 0.000
y -3.332 -23.803 0.000
z 0.000 0.000 -26.374
Traceless
 xyz
x 3.189 -3.332 0.000
y -3.332 0.333 0.000
z 0.000 0.000 -3.522
Polar
3z2-r2-7.045
x2-y21.904
xy-3.332
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.533 0.285 0.000
y 0.285 6.991 0.000
z 0.000 0.000 3.142


<r2> (average value of r2) Å2
<r2> 80.082
(<r2>)1/2 8.949