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: PBEPBEultrafine/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 PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-191.822917
Energy at 298.15K-191.829234
HF Energy-191.822917
Nuclear repulsion energy118.739459
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 PBEPBEultrafine/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' 3370 3340 2.37      
2 A' 3197 3168 8.78      
3 A' 3101 3072 4.63      
4 A' 3099 3071 10.30      
5 A' 2990 2963 13.13      
6 A' 1674 1659 99.52      
7 A' 1509 1495 14.27      
8 A' 1454 1441 10.64      
9 A' 1413 1401 19.13      
10 A' 1388 1375 0.84      
11 A' 1165 1154 125.37      
12 A' 1012 1003 21.26      
13 A' 965 957 27.87      
14 A' 832 824 5.12      
15 A' 456 452 16.54      
16 A' 395 391 3.21      
17 A" 3044 3017 13.06      
18 A" 1491 1478 9.96      
19 A" 1084 1074 6.06      
20 A" 802 795 103.40      
21 A" 701 695 5.83      
22 A" 503 498 32.07      
23 A" 463 459 97.35      
24 A" 155 154 1.69      

Unscaled Zero Point Vibrational Energy (zpe) 18131.8 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 17966.8 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 PBEPBEultrafine/3-21G
ABC
0.32196 0.30117 0.16034

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.898 -1.108 0.000
C2 0.000 0.104 0.000
C3 0.443 1.376 0.000
O4 -1.343 -0.290 0.000
H5 1.956 -0.808 0.000
H6 0.692 -1.729 0.890
H7 0.692 -1.729 -0.890
H8 1.512 1.588 0.000
H9 -0.237 2.233 0.000
H10 -1.914 0.538 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.50882.52562.38651.09971.10481.10482.76503.52933.2592
C21.50881.34681.40012.15852.15212.15212.11832.14261.9630
C32.52561.34682.44272.65733.23953.23951.08971.09432.5016
O42.38651.40012.44273.34032.64712.64713.41752.75541.0061
H51.09972.15852.65733.34031.79951.79952.43693.75004.0982
H61.10482.15213.23952.64711.79951.78093.53054.16603.5676
H71.10482.15213.23952.64711.79951.78093.53054.16603.5676
H82.76502.11831.08973.41752.43693.53053.53051.86423.5832
H93.52932.14261.09432.75543.75004.16604.16601.86422.3846
H103.25921.96302.50161.00614.09823.56763.56763.58322.3846

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 124.264 C1 C2 O4 110.192
C2 C1 H5 110.708 C2 C1 H6 109.895
C2 C1 H7 109.895 C2 C3 H8 120.408
C2 C3 H9 122.391 C2 O4 H10 108.219
C3 C2 O4 125.544 H5 C1 H6 109.433
H5 C1 H7 109.433 H6 C1 H7 107.414
H8 C3 H9 117.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.635      
2 C 0.242      
3 C -0.463      
4 O -0.533      
5 H 0.214      
6 H 0.230      
7 H 0.230      
8 H 0.192      
9 H 0.174      
10 H 0.349      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.226 0.634 0.000 0.673
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.737 -3.494 0.000
y -3.494 -24.047 0.000
z 0.000 0.000 -26.821
Traceless
 xyz
x 3.696 -3.494 0.000
y -3.494 0.232 0.000
z 0.000 0.000 -3.929
Polar
3z2-r2-7.858
x2-y22.309
xy-3.494
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.499 0.231 0.000
y 0.231 6.636 0.000
z 0.000 0.000 2.565


<r2> (average value of r2) Å2
<r2> 81.849
(<r2>)1/2 9.047