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: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-192.451241
Energy at 298.15K-192.455857
HF Energy-192.451241
Nuclear repulsion energy112.009688
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 mPW1PW91/6-31G**
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' 3312 3151 3.12      
2 A' 3202 3046 5.67      
3 A' 3190 3035 2.39      
4 A' 3075 2926 3.15      
5 A' 1649 1569 62.00      
6 A' 1489 1417 15.70      
7 A' 1472 1401 27.51      
8 A' 1405 1337 34.11      
9 A' 1287 1224 51.34      
10 A' 1072 1020 3.53      
11 A' 933 888 3.49      
12 A' 836 795 2.01      
13 A' 524 499 14.87      
14 A' 381 363 2.29      
15 A" 3149 2996 9.28      
16 A" 1493 1420 9.43      
17 A" 1029 979 7.43      
18 A" 743 707 30.55      
19 A" 509 484 1.00      
20 A" 371 353 0.08      
21 A" 55 52 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 15587.1 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 14831.1 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 mPW1PW91/6-31G**
ABC
0.36588 0.30327 0.17108

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.145 0.000
O2 0.462 1.288 0.000
C3 -1.424 -0.062 0.000
C4 0.902 -1.071 0.000
H5 -2.072 0.806 0.000
H6 -1.865 -1.052 0.000
H7 1.942 -0.749 0.000
H8 0.715 -1.693 0.881
H9 0.715 -1.693 -0.881

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.23311.43861.51382.17482.21572.13772.15922.1592
O21.23312.31892.39982.57933.29992.51773.11833.1183
C31.43862.31892.53521.08301.08423.43522.83002.8300
C41.51382.39982.53523.51662.76651.08911.09391.0939
H52.17482.57931.08303.51661.86974.30443.84503.8450
H62.21573.29991.08422.76651.86973.81882.79982.7998
H72.13772.51773.43521.08914.30443.81881.78121.7812
H82.15923.11832.83001.09393.84502.79981.78121.7611
H92.15923.11832.83001.09393.84502.79981.78121.7611

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 118.510 C1 C3 H6 122.244
C1 C4 H7 109.342 C1 C4 H8 110.762
C1 C4 H9 110.762 O2 C1 C3 120.251
O2 C1 C4 121.431 C3 C1 C4 118.317
H5 C3 H6 119.246 H7 C4 H8 109.362
H7 C4 H9 109.362 H8 C4 H9 107.211
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.406      
2 O -0.449      
3 C -0.270      
4 C -0.475      
5 H 0.165      
6 H 0.144      
7 H 0.169      
8 H 0.154      
9 H 0.154      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.335 -2.613 0.000 2.934
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.019 -1.557 0.000
y -1.557 -26.110 0.000
z 0.000 0.000 -24.068
Traceless
 xyz
x 3.071 -1.557 0.000
y -1.557 -3.067 0.000
z 0.000 0.000 -0.004
Polar
3z2-r2-0.007
x2-y24.092
xy-1.557
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.837 0.286 0.000
y 0.286 5.623 0.000
z 0.000 0.000 3.124


<r2> (average value of r2) Å2
<r2> 76.245
(<r2>)1/2 8.732