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: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-191.266248
Energy at 298.15K 
HF Energy-191.266248
Nuclear repulsion energy111.661584
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/6-31G
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' 3443 3109 5.46      
2 A' 3332 3008 6.35      
3 A' 3304 2983 9.40      
4 A' 3196 2886 12.74      
5 A' 1640 1481 8.48      
6 A' 1624 1467 25.51      
7 A' 1580 1427 18.91      
8 A' 1475 1332 35.74      
9 A' 1381 1247 16.40      
10 A' 1113 1005 3.21      
11 A' 1069 965 7.91      
12 A' 895 808 0.19      
13 A' 554 500 16.99      
14 A' 423 382 1.90      
15 A" 3256 2940 21.89      
16 A" 1642 1483 11.66      
17 A" 1164 1051 3.35      
18 A" 863 779 46.78      
19 A" 547 494 0.06      
20 A" 519 469 1.35      
21 A" 46i 41i 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 16486.9 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 14886.0 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/6-31G
ABC
0.36606 0.30108 0.17036

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.114 0.000
O2 0.736 1.168 0.000
C3 -1.398 0.258 0.000
C4 0.652 -1.244 0.000
H5 -1.828 1.239 0.000
H6 -2.051 -0.593 0.000
H7 1.727 -1.129 0.000
H8 0.366 -1.816 0.876
H9 0.366 -1.816 -0.876

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.28591.40501.50632.14662.16932.12752.15062.1506
O21.28592.32002.41332.56533.29692.50153.13173.1317
C31.40502.32002.54111.07171.07243.41822.85962.8596
C41.50632.41332.54113.50972.78071.08031.08441.0844
H52.14662.56531.07173.50971.84544.27133.86203.8620
H62.16933.29691.07242.78071.84543.81552.84702.8470
H72.12752.50153.41821.08034.27133.81551.75761.7576
H82.15063.13172.85961.08443.86202.84701.75761.7511
H92.15063.13172.85961.08443.86202.84701.75761.7511

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 119.549 C1 C3 H6 121.662
C1 C4 H7 109.571 C1 C4 H8 111.175
C1 C4 H9 111.175 O2 C1 C3 119.061
O2 C1 C4 119.399 C3 C1 C4 121.540
H5 C3 H6 118.789 H7 C4 H8 108.572
H7 C4 H9 108.572 H8 C4 H9 107.692
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.362      
2 O -0.461      
3 C -0.317      
4 C -0.513      
5 H 0.198      
6 H 0.178      
7 H 0.199      
8 H 0.177      
9 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.798 -2.326 0.000 2.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.748 -2.540 0.000
y -2.540 -26.289 0.000
z 0.000 0.000 -24.805
Traceless
 xyz
x 1.798 -2.540 0.000
y -2.540 -2.012 0.000
z 0.000 0.000 0.214
Polar
3z2-r20.428
x2-y22.540
xy-2.540
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.453 0.447 0.000
y 0.447 5.078 0.000
z 0.000 0.000 2.852


<r2> (average value of r2) Å2
<r2> 76.955
(<r2>)1/2 8.772