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: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-192.560608
Energy at 298.15K-192.566923
HF Energy-191.952816
Nuclear repulsion energy120.107742
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 MP2/6-31+G**
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' 3844 3616 34.83      
2 A' 3356 3156 6.77      
3 A' 3245 3052 2.49      
4 A' 3243 3050 13.00      
5 A' 3127 2941 14.86      
6 A' 1746 1642 117.77      
7 A' 1539 1448 9.31      
8 A' 1491 1403 1.15      
9 A' 1451 1365 34.43      
10 A' 1379 1297 29.99      
11 A' 1214 1142 134.99      
12 A' 1046 983 37.60      
13 A' 992 933 12.37      
14 A' 878 826 10.75      
15 A' 479 450 19.39      
16 A' 410 386 1.37      
17 A" 3213 3022 8.66      
18 A" 1514 1424 8.08      
19 A" 1088 1023 0.45      
20 A" 747 703 82.53      
21 A" 723 680 1.53      
22 A" 475 447 4.52      
23 A" 396 372 114.44      
24 A" 173 163 2.82      

Unscaled Zero Point Vibrational Energy (zpe) 18882.9 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 17761.2 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 MP2/6-31+G**
ABC
0.33431 0.30248 0.16362

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.965 -1.043 0.000
C2 0.000 0.096 0.000
C3 0.325 1.400 0.000
O4 -1.298 -0.371 0.000
H5 1.989 -0.677 0.000
H6 0.807 -1.665 0.881
H7 0.807 -1.665 -0.881
H8 1.362 1.697 0.000
H9 -0.427 2.177 0.000
H10 -1.904 0.384 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.49362.52522.36071.08731.09001.09002.76883.50843.2045
C21.49361.34311.37912.13432.12872.12872.10152.12411.9253
C32.52521.34312.40172.66093.22523.22521.07811.08182.4497
O42.36071.37912.40173.30092.62342.62343.36862.69290.9681
H51.08732.13432.66093.30091.77471.77472.45583.73944.0349
H61.09002.12873.22522.62341.77471.76193.51994.13093.5107
H71.09002.12873.22522.62341.77471.76193.51994.13093.5107
H82.76882.10151.07813.36862.45583.51993.51991.85153.5196
H93.50842.12411.08182.69293.73944.13094.13091.85152.3235
H103.20451.92532.44970.96814.03493.51073.51073.51962.3235

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 125.709 C1 C2 O4 110.463
C2 C1 H5 110.590 C2 C1 H6 109.986
C2 C1 H7 109.986 C2 C3 H8 120.048
C2 C3 H9 121.941 C2 O4 H10 108.968
C3 C2 O4 123.828 H5 C1 H6 109.192
H5 C1 H7 109.192 H6 C1 H7 107.842
H8 C3 H9 118.011
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability