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 HCCF (Fluoroacetylene)

using model chemistry: wB97X-D/cc-pVQZ

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 wB97X-D/cc-pVQZ
 hartrees
Energy at 0K-176.566996
Energy at 298.15K 
HF Energy-176.566996
Nuclear repulsion energy55.927203
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 wB97X-D/cc-pVQZ
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 3492 3492 98.54 21.52 0.24 0.39
2 Σ 2347 2347 144.36 64.39 0.07 0.14
3 Σ 1104 1104 85.79 9.25 0.19 0.32
4 Π 639 639 53.48 1.35 0.75 0.86
4 Π 639 639 53.48 1.35 0.75 0.86
5 Π 436 436 0.27 7.58 0.75 0.86
5 Π 436 436 0.27 7.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4547.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4547.0 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 wB97X-D/cc-pVQZ
B
0.32829

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVQZ

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 -1.281
F3 0.000 0.000 1.176
H4 0.000 0.000 -2.342

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.18841.26942.2489
C21.18842.45781.0605
F31.26942.45783.5183
H42.24891.06053.5183

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 wB97X-D/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.320      
2 C -0.299      
3 F -0.139      
4 H 0.118      


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 -0.567 0.567
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.910 0.000 0.000
y 0.000 -16.910 0.000
z 0.000 0.000 -12.763
Traceless
 xyz
x -2.073 0.000 0.000
y 0.000 -2.073 0.000
z 0.000 0.000 4.147
Polar
3z2-r28.293
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 2.448 0.000 0.000
y 0.000 2.448 0.000
z 0.000 0.000 4.783


<r2> (average value of r2) Å2
<r2> 37.542
(<r2>)1/2 6.127