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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: PBEPBE/6-31G**

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 PBEPBE/6-31G**
 hartrees
Energy at 0K-176.346243
Energy at 298.15K 
HF Energy-176.346243
Nuclear repulsion energy54.958876
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**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3450 3403 88.94 29.71 0.20 0.33
2 Σ 2282 2251 97.88 28.27 0.25 0.40
3 Σ 1072 1057 65.04 9.65 0.23 0.38
4 Π 550 543 38.48 0.26 0.75 0.86
4 Π 550 543 38.48 0.26 0.75 0.86
5 Π 333 328 7.60 10.84 0.75 0.86
5 Π 333 328 7.60 10.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4284.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 4226.1 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**
B
0.31686

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.093
C2 0.000 0.000 -1.306
F3 0.000 0.000 1.197
H4 0.000 0.000 -2.377

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.21291.29022.2836
C21.21292.50311.0708
F31.29022.50313.5739
H42.28361.07083.5739

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 PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.081      
2 C -0.088      
3 F -0.152      
4 H 0.159      


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 -0.377 0.377
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.431 0.000 0.000
y 0.000 -16.431 0.000
z 0.000 0.000 -12.320
Traceless
 xyz
x -2.056 0.000 0.000
y 0.000 -2.056 0.000
z 0.000 0.000 4.111
Polar
3z2-r28.222
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 1.350 0.000 0.000
y 0.000 1.350 0.000
z 0.000 0.000 4.550


<r2> (average value of r2) Å2
<r2> 38.239
(<r2>)1/2 6.184