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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-151.134715
Energy at 298.15K-151.136857
HF Energy-151.134715
Nuclear repulsion energy61.136909
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 B3PW91/STO-3G
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' 3486 3085 0.91      
2 A' 3309 2928 1.59      
3 A' 1927 1706 14.46      
4 A' 1649 1459 12.17      
5 A' 1506 1333 3.98      
6 A' 1115 986 10.84      
7 A' 906 802 4.16      
8 A' 455 403 3.19      
9 A" 3490 3088 0.99      
10 A" 1645 1456 7.13      
11 A" 1024 906 1.33      
12 A" 95 84 1.42      

Unscaled Zero Point Vibrational Energy (zpe) 10302.9 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 9118.1 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 B3PW91/STO-3G
ABC
2.55665 0.31719 0.29813

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.006 -0.654 0.000
C2 0.000 0.535 0.000
O3 1.229 0.437 0.000
H4 -0.499 -1.634 0.000
H5 -1.649 -0.574 0.890
H6 -1.649 -0.574 -0.890

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.55812.48801.10251.10131.1013
C21.55811.23332.22552.17802.1780
O32.48801.23332.69753.17853.1785
H41.10252.22552.69751.79941.7994
H51.10132.17803.17851.79941.7809
H61.10132.17803.17851.79941.7809

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 125.669 C2 C1 H4 112.401
C2 C1 H5 108.746 C2 C1 H6 108.746
H4 C1 H5 109.467 H4 C1 H6 109.467
H5 C1 H6 107.907
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.254      
2 C 0.093      
3 O -0.135      
4 H 0.094      
5 H 0.101      
6 H 0.101      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.198 -0.977 0.000 1.545
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.100 0.050 0.000
y 0.050 -16.634 0.000
z 0.000 0.000 -15.403
Traceless
 xyz
x -1.082 0.050 0.000
y 0.050 -0.382 0.000
z 0.000 0.000 1.464
Polar
3z2-r22.928
x2-y2-0.467
xy0.050
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.494 0.269 0.000
y 0.269 1.488 0.000
z 0.000 0.000 1.267


<r2> (average value of r2) Å2
<r2> 44.818
(<r2>)1/2 6.695