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: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-191.998253
Energy at 298.15K-192.004673
HF Energy-191.998253
Nuclear repulsion energy119.571387
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 B3PW91/3-21G*
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' 3543 3399 6.04      
2 A' 3276 3143 8.13      
3 A' 3181 3051 4.48      
4 A' 3173 3044 9.84      
5 A' 3066 2941 11.57      
6 A' 1731 1660 111.65      
7 A' 1550 1487 13.50      
8 A' 1497 1436 11.73      
9 A' 1460 1401 21.71      
10 A' 1423 1365 2.60      
11 A' 1198 1150 142.74      
12 A' 1048 1005 25.01      
13 A' 997 957 31.78      
14 A' 854 819 6.04      
15 A' 471 452 17.97      
16 A' 407 391 3.63      
17 A" 3122 2995 11.83      
18 A" 1532 1470 10.02      
19 A" 1121 1075 8.30      
20 A" 867 832 110.60      
21 A" 729 700 6.77      
22 A" 516 495 7.84      
23 A" 461 442 139.36      
24 A" 164 158 1.77      

Unscaled Zero Point Vibrational Energy (zpe) 18693.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 17934.0 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 B3PW91/3-21G*
ABC
0.32701 0.30450 0.16246

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.904 -1.095 0.000
C2 0.000 0.104 0.000
C3 0.426 1.370 0.000
O4 -1.331 -0.296 0.000
H5 1.953 -0.793 0.000
H6 0.702 -1.711 0.884
H7 0.702 -1.711 -0.884
H8 1.485 1.591 0.000
H9 -0.256 2.215 0.000
H10 -1.919 0.503 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.50122.51022.37381.09191.09661.09662.74803.50683.2435
C21.50121.33581.39002.14922.13742.13742.10212.12641.9597
C32.51021.33582.42142.64713.21713.21711.08191.08622.5000
O42.37381.39002.42143.32202.63042.63043.39032.73100.9915
H51.09192.14922.64713.32201.78651.78652.42933.73164.0830
H61.09662.13743.21712.63041.78651.76803.50744.13673.5429
H71.09662.13743.21712.63041.78651.76803.50744.13673.5429
H82.74802.10211.08193.39032.42933.50743.50741.84973.5736
H93.50682.12641.08622.73103.73164.13674.13671.84972.3861
H103.24351.95972.50000.99154.08303.54293.54293.57362.3861

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 124.355 C1 C2 O4 110.326
C2 C1 H5 110.969 C2 C1 H6 109.749
C2 C1 H7 109.749 C2 C3 H8 120.430
C2 C3 H9 122.459 C2 O4 H10 109.615
C3 C2 O4 125.319 H5 C1 H6 109.434
H5 C1 H7 109.434 H6 C1 H7 107.435
H8 C3 H9 117.112
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.655      
2 C 0.270      
3 C -0.490      
4 O -0.585      
5 H 0.221      
6 H 0.240      
7 H 0.240      
8 H 0.206      
9 H 0.188      
10 H 0.365      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.148 0.718 0.000 0.733
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.623 -3.594 0.000
y -3.594 -23.983 0.000
z 0.000 0.000 -26.730
Traceless
 xyz
x 3.733 -3.594 0.000
y -3.594 0.194 0.000
z 0.000 0.000 -3.927
Polar
3z2-r2-7.854
x2-y22.359
xy-3.594
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.269 0.260 0.000
y 0.260 6.475 0.000
z 0.000 0.000 2.514


<r2> (average value of r2) Å2
<r2> 80.936
(<r2>)1/2 8.996