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 CH3COCH2 (Acetonyl radical)

using model chemistry: HSEh1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at HSEh1PBE/STO-3G
 hartrees
Energy at 0K-189.830990
Energy at 298.15K-189.835411
HF Energy-189.830990
Nuclear repulsion energy109.558245
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 HSEh1PBE/STO-3G
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' 3603 3181 0.74      
2 A' 3543 3129 0.10      
3 A' 3427 3026 10.87      
4 A' 3352 2960 0.17      
5 A' 1679 1483 5.09      
6 A' 1601 1414 8.72      
7 A' 1552 1371 6.20      
8 A' 1454 1284 32.88      
9 A' 1264 1116 5.44      
10 A' 1071 946 2.05      
11 A' 988 872 8.45      
12 A' 874 772 1.58      
13 A' 489 432 5.83      
14 A' 385 340 1.24      
15 A" 3520 3109 0.06      
16 A" 1679 1482 5.81      
17 A" 1106 976 4.69      
18 A" 734 648 18.10      
19 A" 503 444 0.39      
20 A" 460 406 2.28      
21 A" 67 59 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 16674.4 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 14725.2 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 HSEh1PBE/STO-3G
ABC
0.34421 0.29508 0.16381

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.145 0.000
O2 0.668 1.263 0.000
C3 -1.427 0.128 0.000
C4 0.739 -1.221 0.000
H5 -1.993 1.065 0.000
H6 -1.991 -0.811 0.000
H7 1.824 -1.054 0.000
H8 0.470 -1.806 0.890
H9 0.470 -1.806 -0.890

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.30261.42701.55282.19542.20862.18252.19532.1953
O21.30262.38302.48462.66853.37242.58923.20173.2017
C31.42702.38302.55161.09541.09523.45882.85132.8513
C41.55282.48462.55163.56262.76101.09701.09881.0988
H52.19542.66851.09543.56261.87664.36583.88653.8865
H62.20863.37241.09522.76101.87663.82252.79972.7997
H72.18252.58923.45881.09704.36583.82251.78611.7861
H82.19533.20172.85131.09883.88652.79971.78611.7795
H92.19533.20172.85131.09883.88652.79971.78611.7795

picture of Acetonyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 120.428 C1 C3 H6 121.688
C1 C4 H7 109.708 C1 C4 H8 110.605
C1 C4 H9 110.605 O2 C1 C3 121.550
O2 C1 C4 120.701 C3 C1 C4 117.749
H5 C3 H6 117.884 H7 C4 H8 108.862
H7 C4 H9 108.862 H8 C4 H9 108.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.102      
2 O -0.155      
3 C -0.138      
4 C -0.252      
5 H 0.093      
6 H 0.087      
7 H 0.090      
8 H 0.086      
9 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.083 -1.377 0.000 1.752
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.428 -1.217 0.000
y -1.217 -23.327 0.000
z 0.000 0.000 -22.220
Traceless
 xyz
x 1.346 -1.217 0.000
y -1.217 -1.503 0.000
z 0.000 0.000 0.157
Polar
3z2-r20.315
x2-y21.899
xy-1.217
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.596 0.264 0.000
y 0.264 3.106 0.000
z 0.000 0.000 1.375


<r2> (average value of r2) Å2
<r2> 77.653
(<r2>)1/2 8.812