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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-152.262060
Energy at 298.15K-152.264330
HF Energy-152.262060
Nuclear repulsion energy62.237234
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 B1B95/3-21G
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' 3151 3015 6.93      
2 A' 3060 2928 4.55      
3 A' 1862 1782 84.39      
4 A' 1515 1450 27.28      
5 A' 1411 1350 28.21      
6 A' 1066 1019 16.61      
7 A' 824 788 6.14      
8 A' 435 416 3.87      
9 A" 3155 3018 0.39      
10 A" 1517 1451 19.49      
11 A" 995 952 1.40      
12 A" 127 121 3.16      

Unscaled Zero Point Vibrational Energy (zpe) 9558.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9144.6 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 B1B95/3-21G
ABC
2.87154 0.32167 0.30569

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.984 -0.667 0.000
C2 0.000 0.484 0.000
O3 1.204 0.484 0.000
H4 -0.483 -1.639 0.000
H5 -1.624 -0.571 0.881
H6 -1.624 -0.571 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.51412.47271.09441.09331.0933
C21.51411.20452.17782.12782.1278
O32.47271.20452.71263.14503.1450
H41.09442.17782.71261.79461.7946
H51.09332.12783.14501.79461.7625
H61.09332.12783.14501.79461.7625

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 130.550 C2 C1 H4 112.210
C2 C1 H5 108.299 C2 C1 H6 108.299
H4 C1 H5 110.233 H4 C1 H6 110.233
H5 C1 H6 107.418
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.737      
2 C 0.355      
3 O -0.383      
4 H 0.244      
5 H 0.261      
6 H 0.261      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.080 -1.445 0.000 2.533
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.820 -0.131 0.000
y -0.131 -18.434 0.000
z 0.000 0.000 -16.723
Traceless
 xyz
x -1.242 -0.131 0.000
y -0.131 -0.662 0.000
z 0.000 0.000 1.904
Polar
3z2-r23.807
x2-y2-0.386
xy-0.131
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.882 0.446 0.000
y 0.446 2.829 0.000
z 0.000 0.000 2.339


<r2> (average value of r2) Å2
<r2> 45.005
(<r2>)1/2 6.709