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: B1B95/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 B1B95/STO-3G
 hartrees
Energy at 0K-189.943942
Energy at 298.15K-189.948327
HF Energy-189.943942
Nuclear repulsion energy109.656087
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 B1B95/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' 3588 3168 0.75      
2 A' 3533 3119 0.13      
3 A' 3413 3013 12.55      
4 A' 3344 2953 0.22      
5 A' 1671 1475 4.96      
6 A' 1598 1411 9.93      
7 A' 1545 1365 6.08      
8 A' 1451 1281 32.61      
9 A' 1251 1105 3.85      
10 A' 1064 939 1.80      
11 A' 977 863 8.40      
12 A' 871 769 1.86      
13 A' 486 429 5.81      
14 A' 381 337 1.25      
15 A" 3512 3101 0.04      
16 A" 1671 1475 5.73      
17 A" 1101 972 4.85      
18 A" 745 658 19.52      
19 A" 509 450 0.24      
20 A" 450 397 2.80      
21 A" 54 48 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 16606.9 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 14663.9 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 B1B95/STO-3G
ABC
0.34551 0.29522 0.16414

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.143 0.000
O2 0.684 1.253 0.000
C3 -1.422 0.148 0.000
C4 0.722 -1.231 0.000
H5 -1.972 1.095 0.000
H6 -2.003 -0.780 0.000
H7 1.808 -1.078 0.000
H8 0.446 -1.813 0.889
H9 0.446 -1.813 -0.889

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.30371.42181.55202.18992.20502.18122.19432.1943
O21.30372.37792.48392.66083.36902.58723.20083.2008
C31.42182.37792.54911.09521.09503.45432.85062.8506
C41.55202.48392.54913.55932.76171.09631.09801.0980
H52.18992.66081.09523.55931.87544.35983.88533.8853
H62.20503.36901.09502.76171.87543.82182.80242.8024
H72.18122.58723.45431.09634.35983.82181.78451.7845
H82.19433.20082.85061.09803.88532.80241.78451.7784
H92.19433.20082.85061.09803.88532.80241.78451.7784

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 120.377 C1 C3 H6 121.818
C1 C4 H7 109.699 C1 C4 H8 110.627
C1 C4 H9 110.627 O2 C1 C3 121.434
O2 C1 C4 120.625 C3 C1 C4 117.941
H5 C3 H6 117.805 H7 C4 H8 108.835
H7 C4 H9 108.835 H8 C4 H9 108.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.105      
2 O -0.159      
3 C -0.137      
4 C -0.248      
5 H 0.092      
6 H 0.087      
7 H 0.089      
8 H 0.085      
9 H 0.085      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.101 -1.368 0.000 1.756
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.479 -1.249 0.000
y -1.249 -23.322 0.000
z 0.000 0.000 -22.230
Traceless
 xyz
x 1.297 -1.249 0.000
y -1.249 -1.467 0.000
z 0.000 0.000 0.170
Polar
3z2-r20.341
x2-y21.843
xy-1.249
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.699 0.255 0.000
y 0.255 3.117 0.000
z 0.000 0.000 1.380


<r2> (average value of r2) Å2
<r2> 77.545
(<r2>)1/2 8.806