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: HF/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 HF/3-21G*
 hartrees
Energy at 0K-190.869302
Energy at 298.15K-190.875952
HF Energy-190.869302
Nuclear repulsion energy120.577430
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 HF/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' 3893 3514 25.44      
2 A' 3423 3090 9.94      
3 A' 3333 3008 5.21      
4 A' 3301 2980 14.03      
5 A' 3211 2899 13.23      
6 A' 1870 1688 143.30      
7 A' 1663 1501 7.81      
8 A' 1615 1458 19.31      
9 A' 1582 1428 14.60      
10 A' 1503 1357 7.14      
11 A' 1290 1165 160.55      
12 A' 1140 1029 27.30      
13 A' 1072 967 55.99      
14 A' 888 802 7.32      
15 A' 508 459 21.64      
16 A' 431 389 4.39      
17 A" 3260 2943 14.38      
18 A" 1645 1484 7.09      
19 A" 1218 1099 12.40      
20 A" 1031 930 118.01      
21 A" 804 725 9.70      
22 A" 558 504 2.74      
23 A" 449 405 182.43      
24 A" 183 165 1.53      

Unscaled Zero Point Vibrational Energy (zpe) 19935.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 17993.5 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 HF/3-21G*
ABC
0.33481 0.30626 0.16477

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.961 -1.043 0.000
C2 0.000 0.108 0.000
C3 0.340 1.381 0.000
O4 -1.300 -0.357 0.000
H5 1.985 -0.699 0.000
H6 0.787 -1.659 0.874
H7 0.787 -1.659 -0.874
H8 1.369 1.672 0.000
H9 -0.389 2.168 0.000
H10 -1.950 0.356 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.49982.50172.36291.08001.08391.08392.74533.48333.2305
C21.49981.31691.38072.14292.12332.12332.07832.09611.9662
C32.50171.31692.38952.65123.19443.19441.06931.07352.5094
O42.36291.38072.38953.30262.61062.61063.35272.68430.9656
H51.08002.14292.65123.30261.76701.76702.44953.72244.0745
H61.08392.12333.19442.61061.76701.74883.49294.09833.5102
H71.08392.12333.19442.61061.76701.74883.49294.09833.5102
H82.74532.07831.06933.35272.44953.49293.49291.82703.5708
H93.48332.09611.07352.68433.72244.09834.09831.82702.3916
H103.23051.96622.50940.96564.07453.51023.51023.57082.3916

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 125.159 C1 C2 O4 110.160
C2 C1 H5 111.287 C2 C1 H6 109.478
C2 C1 H7 109.478 C2 C3 H8 120.795
C2 C3 H9 122.206 C2 O4 H10 112.661
C3 C2 O4 124.682 H5 C1 H6 109.485
H5 C1 H7 109.485 H6 C1 H7 107.552
H8 C3 H9 116.999
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.616      
2 C 0.356      
3 C -0.513      
4 O -0.718      
5 H 0.214      
6 H 0.236      
7 H 0.236      
8 H 0.213      
9 H 0.198      
10 H 0.393      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.058 0.855 0.000 0.857
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.931 -3.657 0.000
y -3.657 -24.865 0.000
z 0.000 0.000 -27.048
Traceless
 xyz
x 4.025 -3.657 0.000
y -3.657 -0.376 0.000
z 0.000 0.000 -3.649
Polar
3z2-r2-7.299
x2-y22.934
xy-3.657
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.835 0.241 0.000
y 0.241 6.373 0.000
z 0.000 0.000 2.409


<r2> (average value of r2) Å2
<r2> 80.338
(<r2>)1/2 8.963