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

using model chemistry: mPW1PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-153.195484
Energy at 298.15K-153.197767
HF Energy-153.195484
Nuclear repulsion energy63.260809
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/cc-pVTZ
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' 3142 3014 7.90      
2 A' 3045 2921 6.69      
3 A' 1964 1884 158.19      
4 A' 1455 1396 22.11      
5 A' 1353 1298 15.67      
6 A' 1057 1014 15.51      
7 A' 878 843 4.25      
8 A' 471 452 5.34      
9 A" 3147 3018 0.67      
10 A" 1452 1393 12.34      
11 A" 950 911 0.01      
12 A" 113 109 1.05      

Unscaled Zero Point Vibrational Energy (zpe) 9514.2 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 9126.0 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 mPW1PW91/cc-pVTZ
ABC
2.86322 0.33522 0.31759

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.961 -0.660 0.000
C2 0.000 0.490 0.000
O3 1.176 0.473 0.000
H4 -0.436 -1.617 0.000
H5 -1.603 -0.575 0.876
H6 -1.603 -0.575 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.49842.41871.09141.08951.0895
C21.49841.17612.15142.11442.1144
O32.41871.17612.63983.09643.0964
H41.09142.15142.63981.79261.7926
H51.08952.11443.09641.79261.7527
H61.08952.11443.09641.79261.7527

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 129.089 C2 C1 H4 111.381
C2 C1 H5 108.547 C2 C1 H6 108.547
H4 C1 H5 110.567 H4 C1 H6 110.567
H5 C1 H6 107.099
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.203      
2 C 0.043      
3 O -0.147      
4 H 0.093      
5 H 0.106      
6 H 0.106      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.111 -1.383 0.000 2.524
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.790 -0.073 0.000
y -0.073 -18.603 0.000
z 0.000 0.000 -16.911
Traceless
 xyz
x -1.033 -0.073 0.000
y -0.073 -0.753 0.000
z 0.000 0.000 1.785
Polar
3z2-r23.571
x2-y2-0.187
xy-0.073
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.657 0.457 0.000
y 0.457 3.932 0.000
z 0.000 0.000 3.132


<r2> (average value of r2) Å2
<r2> 43.893
(<r2>)1/2 6.625