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: HF/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 HF/3-21G*
 hartrees
Energy at 0K-250.406589
Energy at 298.15K-250.410270
Nuclear repulsion energy118.918547
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 HF/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' 3341 3016 1.66      
2 A' 3227 2912 0.07      
3 A' 2049 1849 258.58      
4 A' 1631 1473 19.00      
5 A' 1579 1425 43.66      
6 A' 1355 1223 229.30      
7 A' 1128 1018 37.95      
8 A' 905 817 11.91      
9 A' 638 576 32.43      
10 A' 420 379 0.19      
11 A" 3281 2962 0.85      
12 A" 1642 1482 12.42      
13 A" 1211 1093 20.53      
14 A" 626 565 12.90      
15 A" 154 139 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 11594.0 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 10464.7 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 HF/3-21G*
ABC
0.36944 0.32398 0.17823

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.187 0.000
C2 1.060 -0.863 0.000
O3 0.101 1.366 0.000
F4 -1.232 -0.388 0.000
H5 2.032 -0.399 0.000
H6 0.945 -1.491 0.874
H7 0.945 -1.491 -0.874

Atom - Atom Distances (Å)
  C1 C2 O3 F4 H5 H6 H7
C11.49181.18341.35952.11502.11512.1151
C21.49182.42642.34101.07711.08301.0830
O31.18342.42642.20262.61643.10513.1051
F41.35952.34102.20263.26442.59262.5926
H52.11501.07712.61643.26441.77221.7722
H62.11511.08303.10512.59261.77221.7483
H72.11511.08303.10512.59261.77221.7483

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 109.782 C1 C2 H6 109.434
C1 C2 H7 109.434 C2 C1 O3 129.830
C2 C1 F4 110.294 O3 C1 F4 119.876
H5 C2 H6 110.260 H5 C2 H7 110.260
H6 C2 H7 107.636
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.871 1.017    
2 C -0.726 -0.583    
3 O -0.545 -0.580    
4 F -0.397 -0.363    
5 H 0.262 0.159    
6 H 0.268 0.175    
7 H 0.268 0.175    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.027 -2.606 0.000 3.302
CHELPG 2.036 -2.609 0.000 3.309
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.354 -1.730 0.000
y -1.730 -25.702 0.000
z 0.000 0.000 -21.021
Traceless
 xyz
x 0.007 -1.730 0.000
y -1.730 -3.514 0.000
z 0.000 0.000 3.507
Polar
3z2-r27.014
x2-y22.348
xy-1.730
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.737 0.094 0.000
y 0.094 3.672 0.000
z 0.000 0.000 2.134


<r2> (average value of r2) Å2
<r2> 68.084
(<r2>)1/2 8.251