return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for HCF (Fluoromethylene)

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
2 1 yes CS 3A"

State 1 (1A')

Jump to S2C1
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-137.754532
Energy at 298.15K 
HF Energy-137.754532
Nuclear repulsion energy27.469077
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/6-31G*
Rotational Constants (cm-1) from geometry optimized at HF/6-31G*
ABC
16.29675 1.24942 1.16045

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.009 0.958 0.000
C2 0.067 0.713 0.000
F3 0.067 -0.582 0.000

Atom - Atom Distances (Å)
  H1 C2 F3
H11.10361.8786
C21.10361.2955
F31.87861.2955

picture of Fluoromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 F3 102.782
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.121      
2 C 0.165      
3 F -0.287      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.468 0.089 0.000 1.471
CHELPG -1.334 0.219 0.000 1.352
AIM -0.588 -1.802 0.000 1.895
ESP -1.313 0.122 0.000 1.319


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.584 -1.726 0.000
y -1.726 -12.387 0.000
z 0.000 0.000 -9.832
Traceless
 xyz
x -0.474 -1.726 0.000
y -1.726 -1.679 0.000
z 0.000 0.000 2.153
Polar
3z2-r24.307
x2-y20.803
xy-1.726
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.775 -0.359 0.000
y -0.359 1.564 0.000
z 0.000 0.000 1.300


<r2> (average value of r2) Å2
<r2> 15.142
(<r2>)1/2 3.891

State 2 (3A")

Jump to S1C1
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-137.764272
Energy at 298.15K-137.764149
HF Energy-137.764272
Nuclear repulsion energy27.048527
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/6-31G*
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' 3384 3040 11.29 83.32 0.24 0.39
2 A' 1367 1229 112.66 2.60 0.27 0.43
3 A' 1231 1106 40.24 8.75 0.74 0.85

Unscaled Zero Point Vibrational Energy (zpe) 2991.0 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 2687.4 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/6-31G*
ABC
23.51973 1.15912 1.10468

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.862 1.257 0.000
C2 0.057 0.703 0.000
F3 0.057 -0.608 0.000

Atom - Atom Distances (Å)
  H1 C2 F3
H11.07382.0798
C21.07381.3107
F32.07981.3107

picture of Fluoromethylene state 2 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.185      
2 C 0.129      
3 F -0.313      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.616 1.247 0.000 1.391
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.163 -0.795 0.000
y -0.795 -10.381 0.000
z 0.000 0.000 -11.240
Traceless
 xyz
x 0.648 -0.795 0.000
y -0.795 0.320 0.000
z 0.000 0.000 -0.968
Polar
3z2-r2-1.936
x2-y20.218
xy-0.795
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.277 -0.261 0.000
y -0.261 1.580 0.000
z 0.000 0.000 0.869


<r2> (average value of r2) Å2
<r2> 15.281
(<r2>)1/2 3.909