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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-35.250433
Energy at 298.15K 
HF Energy-35.250433
Nuclear repulsion energy28.383572
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/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 0 1 1 0.00      
1 0.61     0.00      
1 0 0   0.00      
1 0.05     0.00      
1 0     -0.28      
1 0     0.54      
1 0     0.04      
1 0     0.00      
1 0     0.00      

Unscaled Zero Point Vibrational Energy (zpe) 0.3 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 0.3 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/CEP-121G
B
0.31841

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.109
C2 0.000 0.000 -1.297
F3 0.000 0.000 1.199
H4 0.000 0.000 -2.351

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.18811.30842.2415
C21.18812.49651.0534
F31.30842.49653.5499
H42.24151.05343.5499

picture of Fluoroacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 180.000 C2 C1 F3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.127      
2 C -0.248      
3 F -0.183      
4 H 0.305      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.582 1.582
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.023 0.000 0.000
y 0.000 -17.023 0.000
z 0.000 0.000 -13.710
Traceless
 xyz
x -1.657 0.000 0.000
y 0.000 -1.657 0.000
z 0.000 0.000 3.314
Polar
3z2-r26.627
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.367 0.000 0.000
y 0.000 1.367 0.000
z 0.000 0.000 4.398


<r2> (average value of r2) Å2
<r2> 32.314
(<r2>)1/2 5.685