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: MP2/CEP-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 MP2/CEP-31G
 hartrees
Energy at 0K-35.887014
Energy at 298.15K-35.893205
HF Energy-35.537192
Nuclear repulsion energy65.669275
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 MP2/CEP-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' 3667 3544 14.32      
2 A' 3266 3156 26.06      
3 A' 3163 3056 35.97      
4 A' 3158 3052 9.04      
5 A' 3047 2944 27.99      
6 A' 1687 1630 74.40      
7 A' 1525 1473 13.17      
8 A' 1482 1432 1.87      
9 A' 1452 1403 19.11      
10 A' 1354 1308 16.54      
11 A' 1181 1141 140.07      
12 A' 1034 999 37.63      
13 A' 960 928 18.63      
14 A' 819 791 24.70      
15 A' 450 435 21.35      
16 A' 388 375 2.17      
17 A" 3144 3038 33.38      
18 A" 1496 1445 11.36      
19 A" 1102 1065 0.35      
20 A" 743 718 110.79      
21 A" 700 676 4.81      
22 A" 456 440 28.01      
23 A" 402 388 150.35      
24 A" 164 159 2.78      

Unscaled Zero Point Vibrational Energy (zpe) 18418.2 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 17797.5 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 MP2/CEP-31G
ABC
0.31108 0.28477 0.15306

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.127 -0.935 0.000
C2 0.000 0.102 0.000
C3 0.145 1.485 0.000
O4 -1.280 -0.563 0.000
H5 2.114 -0.432 0.000
H6 1.048 -1.583 0.898
H7 1.048 -1.583 -0.898
H8 1.145 1.935 0.000
H9 -0.728 2.160 0.000
H10 -2.021 0.091 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.53182.61222.43531.10771.10991.10992.87013.60833.3111
C21.53181.39061.44222.18092.17772.17772.16102.18272.0210
C32.61221.39062.49492.74923.32183.32181.09671.10282.5757
O42.43531.44222.49493.39642.69462.69463.48122.77860.9887
H51.10772.18092.74923.39641.80751.80752.55833.84684.1684
H61.10992.17773.32182.69461.80751.79563.63184.23863.6087
H71.10992.17773.32182.69461.80751.79563.63184.23863.6087
H82.87012.16101.09673.48122.55833.63183.63181.88603.6638
H93.60832.18271.10282.77863.84684.23864.23861.88602.4401
H103.31112.02102.57570.98874.16843.60873.60873.66382.4401

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 126.652 C1 C2 O4 109.903
C2 C1 H5 110.400 C2 C1 H6 110.019
C2 C1 H7 110.019 C2 C3 H8 120.177
C2 C3 H9 121.755 C2 O4 H10 111.107
C3 C2 O4 123.445 H5 C1 H6 109.189
H5 C1 H7 109.189 H6 C1 H7 107.978
H8 C3 H9 118.067
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability