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: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes NULL 1A'
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-252.836783
Energy at 298.15K-252.840204
Nuclear repulsion energy117.962570
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 PBEPBE/6-31G(2df,p)
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' 3121 3089 3.06      
2 A' 2999 2968 0.30      
3 A' 1866 1847 230.20      
4 A' 1416 1401 12.23      
5 A' 1338 1324 40.92      
6 A' 1178 1166 178.05      
7 A' 969 959 26.60      
8 A' 831 823 35.00      
9 A' 582 576 14.74      
10 A' 394 390 0.10      
11 A" 3072 3040 1.03      
12 A" 1422 1408 7.43      
13 A" 1024 1014 8.21      
14 A" 551 545 2.58      
15 A" 120 119 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 10441.4 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 10333.9 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 PBEPBE/6-31G(2df,p)
ABC
0.36168 0.32098 0.17566

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.188 0.000
C2 1.033 -0.903 0.000
O3 0.156 1.374 0.000
F4 -1.253 -0.350 0.000
H5 2.039 -0.466 0.000
H6 0.896 -1.543 0.885
H7 0.896 -1.543 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 F4 H5 H6 H7
C11.50231.19551.36352.14122.14142.1414
C21.50232.43942.35151.09641.10131.1013
O31.19552.43942.22592.63273.13703.1370
F41.36352.35152.22593.29352.61272.6127
H52.14121.09642.63273.29351.80241.8024
H62.14141.10133.13702.61271.80241.7706
H72.14141.10133.13702.61271.80241.7706

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 109.986 C1 C2 H6 109.706
C1 C2 H7 109.706 C2 C1 O3 129.080
C2 C1 F4 110.184 O3 C1 F4 120.736
H5 C2 H6 110.195 H5 C2 H7 110.195
H6 C2 H7 107.004
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.329      
2 C -0.540      
3 O -0.242      
4 F -0.064      
5 H 0.168      
6 H 0.174      
7 H 0.174      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.296 -2.284 0.000 2.626
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.169 -1.275 0.000
y -1.275 -24.132 0.000
z 0.000 0.000 -20.921
Traceless
 xyz
x 0.358 -1.275 0.000
y -1.275 -2.588 0.000
z 0.000 0.000 2.230
Polar
3z2-r24.459
x2-y21.964
xy-1.275
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.938 -0.072 0.000
y -0.072 4.573 0.000
z 0.000 0.000 2.987


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000