return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3COF (Acetyl fluoride)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes NULL 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-251.612993
Energy at 298.15K-251.616517
Nuclear repulsion energy117.323454
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 B3PW91/3-21G
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' 3204 3079 1.90      
2 A' 3083 2963 0.07      
3 A' 1879 1807 185.59      
4 A' 1522 1463 19.51      
5 A' 1447 1391 50.54      
6 A' 1241 1193 184.07      
7 A' 1029 989 34.13      
8 A' 847 814 14.86      
9 A' 589 566 17.98      
10 A' 391 375 0.21      
11 A" 3144 3022 0.52      
12 A" 1533 1474 14.35      
13 A" 1107 1064 15.61      
14 A" 579 557 2.79      
15 A" 142 136 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 10867.3 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 10445.7 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 B3PW91/3-21G
ABC
0.35499 0.32013 0.17378

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.190 0.000
C2 1.088 -0.839 0.000
O3 0.070 1.393 0.000
F4 -1.235 -0.438 0.000
H5 2.061 -0.349 0.000
H6 0.985 -1.479 0.883
H7 0.985 -1.479 -0.883

Atom - Atom Distances (Å)
  C1 C2 O3 F4 H5 H6 H7
C11.49701.20481.38582.13012.12982.1298
C21.49702.45232.35731.08941.09551.0955
O31.20482.45232.24852.64503.14083.1408
F41.38582.35732.24853.29732.60642.6064
H52.13011.08942.64503.29731.79281.7928
H62.12981.09553.14082.60641.79281.7653
H72.12981.09553.14082.60641.79281.7653

picture of Acetyl fluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 109.893 C1 C2 H6 109.500
C1 C2 H7 109.500 C2 C1 O3 130.060
C2 C1 F4 109.653 O3 C1 F4 120.287
H5 C2 H6 110.277 H5 C2 H7 110.277
H6 C2 H7 107.351
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.652      
2 C -0.736      
3 O -0.436      
4 F -0.278      
5 H 0.259      
6 H 0.269      
7 H 0.269      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.752 -2.290 0.000 2.883
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.504 -1.385 0.000
y -1.385 -24.740 0.000
z 0.000 0.000 -20.931
Traceless
 xyz
x 0.332 -1.385 0.000
y -1.385 -3.022 0.000
z 0.000 0.000 2.690
Polar
3z2-r25.381
x2-y22.236
xy-1.385
xz0.000
yz0.000


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> 68.989
(<r2>)1/2 8.306