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All results from a given calculation for CH3CO (Acetyl radical)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-153.007182
Energy at 298.15K-153.009415
HF Energy-153.007182
Nuclear repulsion energy62.493213
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 PBEPBE/6-31G(2df,p)
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' 3062 3030 8.24      
2 A' 2958 2928 8.17      
3 A' 1870 1851 108.61      
4 A' 1405 1390 19.50      
5 A' 1292 1278 11.71      
6 A' 1007 997 14.98      
7 A' 836 827 5.87      
8 A' 442 438 4.24      
9 A" 3069 3037 0.79      
10 A" 1400 1386 9.67      
11 A" 906 896 0.17      
12 A" 125 124 1.67      

Unscaled Zero Point Vibrational Energy (zpe) 9185.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 9091.0 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 PBEPBE/6-31G(2df,p)
ABC
2.75618 0.32883 0.31086

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.974 -0.659 0.000
C2 0.000 0.501 0.000
O3 1.194 0.465 0.000
H4 -0.456 -1.634 0.000
H5 -1.625 -0.570 0.884
H6 -1.625 -0.570 -0.884

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51482.44121.10391.10171.1017
C21.51481.19412.18302.13762.1376
O32.44121.19412.66873.12973.1297
H41.10392.18302.66871.81151.8115
H51.10172.13763.12971.81151.7685
H61.10172.13763.12971.81151.7685

picture of Acetyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 128.240 C2 C1 H4 111.994
C2 C1 H5 108.533 C2 C1 H6 108.533
H4 C1 H5 110.429 H4 C1 H6 110.429
H5 C1 H6 106.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.473      
2 C 0.084      
3 O -0.107      
4 H 0.154      
5 H 0.171      
6 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.895 -1.266 0.000 2.279
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.293 -0.030 0.000
y -0.030 -18.228 0.000
z 0.000 0.000 -16.689
Traceless
 xyz
x -0.834 -0.030 0.000
y -0.030 -0.737 0.000
z 0.000 0.000 1.572
Polar
3z2-r23.143
x2-y2-0.065
xy-0.030
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.429 0.523 0.000
y 0.523 3.596 0.000
z 0.000 0.000 2.898


<r2> (average value of r2) Å2
<r2> 44.373
(<r2>)1/2 6.661