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

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-153.157923
Energy at 298.15K-153.160184
HF Energy-153.157923
Nuclear repulsion energy63.170453
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 B1B95/6-311G**
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' 3141 3016 9.63      
2 A' 3039 2918 8.58      
3 A' 1959 1881 154.58      
4 A' 1451 1393 22.21      
5 A' 1342 1289 17.13      
6 A' 1043 1001 15.15      
7 A' 867 832 4.45      
8 A' 466 447 5.25      
9 A" 3146 3021 1.59      
10 A" 1448 1390 14.48      
11 A" 942 905 0.01      
12 A" 108 104 1.43      

Unscaled Zero Point Vibrational Energy (zpe) 9475.9 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 9097.8 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 B1B95/6-311G**
ABC
2.81370 0.33543 0.31722

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.962 -0.659 0.000
C2 0.000 0.498 0.000
O3 1.177 0.467 0.000
H4 -0.433 -1.615 0.000
H5 -1.604 -0.576 0.878
H6 -1.604 -0.576 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50502.41771.09251.09041.0904
C21.50501.17722.15682.12062.1206
O32.41771.17722.63193.09713.0971
H41.09252.15682.63191.79471.7947
H51.09042.12063.09711.79471.7552
H61.09042.12063.09711.79471.7552

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 128.254 C2 C1 H4 111.271
C2 C1 H5 108.522 C2 C1 H6 108.522
H4 C1 H5 110.603 H4 C1 H6 110.603
H5 C1 H6 107.194
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.362      
2 C 0.118      
3 O -0.210      
4 H 0.143      
5 H 0.156      
6 H 0.156      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.030 -1.336 0.000 2.430
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.787 -0.114 0.000
y -0.114 -18.619 0.000
z 0.000 0.000 -16.863
Traceless
 xyz
x -1.047 -0.114 0.000
y -0.114 -0.793 0.000
z 0.000 0.000 1.840
Polar
3z2-r23.680
x2-y2-0.169
xy-0.114
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.412 0.454 0.000
y 0.454 3.596 0.000
z 0.000 0.000 2.836


<r2> (average value of r2) Å2
<r2> 43.922
(<r2>)1/2 6.627