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

using model chemistry: ROHF/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 ROHF/6-31G
 hartrees
Energy at 0K-152.219628
Energy at 298.15K-152.222000
HF Energy-152.219628
Nuclear repulsion energy62.968729
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 ROHF/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' 963 862 0.33      
2 A' 508 455 11.72      
3 A" 3293 2948 3.71      
4 A" 1618 1448 18.85      
5 A" 1089 975 0.37      
6 A" 108 97 0.00      
7 A' 3297 2952 6.72      
8 A' 3204 2869 3.38      
9 A' 2026 1814 208.99      
10 A' 1618 1448 26.51      
11 A' 1556 1393 21.09      
12 A' 1201 1076 17.94      

Unscaled Zero Point Vibrational Energy (zpe) 10240.1 cm-1
Scaled (by 0.8953) Zero Point Vibrational Energy (zpe) 9168.0 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 ROHF/6-31G
ABC
2.98231 0.32776 0.31213

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.972 -0.664 0.000
C2 0.000 0.475 0.000
O3 1.187 0.492 0.000
H4 -0.453 -1.614 0.000
H5 -1.607 -0.594 0.874
H6 -1.607 -0.594 -0.874

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.49762.44891.08261.08221.0822
C21.49761.18732.13842.11822.1182
O32.44891.18732.66983.12193.1219
H41.08262.13842.66981.77071.7707
H51.08222.11823.12191.77071.7474
H61.08222.11823.12191.77071.7474

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 131.255 C2 C1 H4 110.927
C2 C1 H5 109.330 C2 C1 H6 109.330
H4 C1 H5 109.760 H4 C1 H6 109.760
H5 C1 H6 107.668
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.579      
2 C 0.428      
3 O -0.477      
4 H 0.208      
5 H 0.209      
6 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.091 -1.467 0.000 3.422
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.524 -0.668 0.000
y -0.668 -18.498 -0.000
z 0.000 -0.000 -16.951
Traceless
 xyz
x -2.800 -0.668 0.000
y -0.668 0.240 -0.000
z 0.000 -0.000 2.560
Polar
3z2-r25.119
x2-y2-2.027
xy-0.668
xz0.000
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 44.737
(<r2>)1/2 6.689