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

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-153.118054
Energy at 298.15K-153.120302
HF Energy-153.118054
Nuclear repulsion energy62.934471
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 B1B95/6-31G**
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' 3162 3019 7.85      
2 A' 3057 2919 5.07      
3 A' 1965 1876 128.82      
4 A' 1462 1396 19.44      
5 A' 1354 1293 13.72      
6 A' 1047 1000 16.50      
7 A' 871 832 4.27      
8 A' 461 441 5.51      
9 A" 3164 3021 1.53      
10 A" 1461 1395 12.27      
11 A" 942 900 0.20      
12 A" 106 102 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 9527.1 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 9096.4 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 B1B95/6-31G**
ABC
2.78081 0.33376 0.31532

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.968 -0.654 0.000
C2 0.000 0.502 0.000
O3 1.185 0.458 0.000
H4 -0.448 -1.615 0.000
H5 -1.612 -0.570 0.878
H6 -1.612 -0.570 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50752.42351.09331.09191.0919
C21.50751.18582.16382.12512.1251
O32.42351.18582.63943.10633.1063
H41.09332.16382.63941.79431.7943
H51.09192.12513.10631.79431.7563
H61.09192.12513.10631.79431.7563

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 127.872 C2 C1 H4 111.614
C2 C1 H5 108.620 C2 C1 H6 108.620
H4 C1 H5 110.390 H4 C1 H6 110.390
H5 C1 H6 107.072
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.443      
2 C 0.262      
3 O -0.311      
4 H 0.157      
5 H 0.167      
6 H 0.167      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.086 -1.292 0.000 2.454
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.502 -0.115 0.000
y -0.115 -18.154 0.000
z 0.000 0.000 -16.606
Traceless
 xyz
x -1.122 -0.115 0.000
y -0.115 -0.600 0.000
z 0.000 0.000 1.722
Polar
3z2-r23.444
x2-y2-0.348
xy-0.115
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.195 0.421 0.000
y 0.421 3.193 0.000
z 0.000 0.000 2.636


<r2> (average value of r2) Å2
<r2> 43.899
(<r2>)1/2 6.626